2026-10-16T18:10:23Z https://sjp.pensoft.net/oai.php

10.1007/s13358-010-0003-2 2010-12-02 sjp

Ordovician–Silurian Lilliput crinoids during the end-Ordovician biotic crisis Borths,Matthew Ausich,William Crinoids Ordovician Silurian Extinction Lilliput Effect Swiss Journal of Palaeontology 130(1): 7-18 Coincident with the end-Ordovician (end-Katian for crinoids) biodiversity crash, crinoids from Anticosti Island, Quebec, experienced a statistically significant reduction in body size, an evolutionary trend termed the “Lilliput Effect”. This decrease in body size occurred for the fauna as a whole, and data indicate that neither dominant Ordovician nor dominant Silurian clades experienced preferential size decrease. Because the post-extinction fauna with a diminished size is composed of largely new taxa, this example of the Lilliput Effect is regarded as the miniaturization mode. The miniaturization occurred very rapidly; however, the recovery on Anticosti Island did not occur for as many as 7 Ma. This macroevolutionary asymmetry, as demonstrated in many other studies, highlights the need to preserve the biodiversity present on Earth today. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0003-2 https://doi.org/10.1007/s13358-010-0003-2 https://sjp.pensoft.net/article/34998/ https://sjp.pensoft.net/article/34998/download/pdf/ en

10.1007/s13358-010-0004-1 2010-12-02 sjp

On the swimming function of crinoid cirri Baumiller,Tomasz Janevski,G. Echinoderms Biomechanics Paleobiology Swiss Journal of Palaeontology 130(1): 19-24 Crinoid cirri are generally considered primarily as structures that anchor the animal to the substrate; however, a swimming function for cirri has also been suggested. Most notably, it has been claimed that an extant comatulid, Dorometra nana, was observed swimming with its cirri. Because no muscles have ever been found in the cirri of crinoids, cirrus movement must involve another mechanism, and recent reports of contractile properties of crinoid ligament suggest that it might be the connective tissue that is responsible. Given the reported mechanical properties of cirral ligament, and the morphology and weight in water of D. nana, we tested the claim of cirrus swimming using a biomechanical model. Our results indicate that the thrust generated by cirri can account only for a very small fraction of what would be needed to overcome the weight of the animal in water, suggesting that D. nana cannot swim with its cirri. A similar approach applied to the Jurassic isocrinid, Pentacrinus briareus (=P. dichotomus), with unusually numerous, long and flattened cirri, also fails to support previously hypothesized cirrus swimming in this taxon. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0004-1 https://doi.org/10.1007/s13358-010-0004-1 https://sjp.pensoft.net/article/34999/ https://sjp.pensoft.net/article/34999/download/pdf/ en

10.1007/s13358-010-0007-y 2010-12-02 sjp

Ecophenotypic variations of Encrinus liliiformis (Echinodermata: Crinoidea) from the middle Triassic Muschelkalk of Southwest Germany Dynowski,Janina Nebelsick,James Crinoids Ecophenotypes Encrinus liliiformis Muschelkalk Triassic Swiss Journal of Palaeontology 130(1): 53-67 Encrinus liliiformis is a well known crinoid from the middle Triassic Muschelkalk of Europe. A statistical analysis of crown shape was conducted in order to quantify possible differences in crown morphology of E.liliiformis originating from three localities in Southwest Germany (Upper Muschelkalk). These differences basically refer to the length of the brachia and ornamentation patterns on the aboral surfaces of the brachials. The populations originate from different environments: Crailsheim, reflecting a shallow water habitat on a carbonate ramp; Neckarwestheim and Mistlau, originating from a deeper basinal environment. The analysis led to a distinction of two ecophenotypes adapted to the varying habitats: (1) an ecophenotype originating in shallow water showing shorter brachia with less ornamented surfaces of brachials; this type is represented by the Crailsheim population; (2) an ecophenotype originating in a deeper water environment showing longer brachia and a higher degree of ornamentation on brachial surfaces, as represented by the Neckarwestheim population. The crinoids from the Mistlau locality take up an intermediate position in morphology, but the low number of specimens does not allow for statistically significant comparisons. Interpretations of these differences in crown morphology are made with respect to reactions to predatory pressure as well as to variations in water flow energy which is of prime importance for obtaining food resources for these filter feeding animals. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0007-y https://doi.org/10.1007/s13358-010-0007-y https://sjp.pensoft.net/article/35005/ https://sjp.pensoft.net/article/35005/download/pdf/ en

10.1007/s13358-010-0010-3 2010-12-02 sjp

Ophiura paucilepis, a new species of brittlestar (Echinodermata, Ophiuroidea) from the Pliocene of the southern North Sea Basin Stöhr,Sabine Jagt,John W.M. Klompmaker,Adiël Neogene Pliocene North Sea Basin The Netherlands Ophiuridae Taxonomy Swiss Journal of Palaeontology 130(1): 113-121 The first articulated ophiuroids to be recorded from Neogene deposits in the southern North Sea Basin are described as a new species, Ophiura paucilepis, based on two discs with portions of proximal arms preserved, plus an isolated arm fragment. The specimens were collected from the Oosterhout Formation (Pliocene, lower Zanclean to mid-Piacenzian, ca. 4.9–2.8 Ma) at sandpit ‘De Kuilen’ near Langenboom (province of Noord-Brabant, the Netherlands). A comparison with extant taxa from the North Sea and North Atlantic, such as O. albida, O. ophiura, O. sarsii and O. carnea, shows the fossil species to be characterised by a coarse disc scalation, which may be an ancestral state or a paedomorphic condition, similar to immature stages of extant taxa. The new species is compared to and distinguished from other records of mid-Cretaceous to Cenozoic taxa that have been assigned to the genus Ophiura either routinely, indiscriminately or with a query. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0010-3 https://doi.org/10.1007/s13358-010-0010-3 https://sjp.pensoft.net/article/35008/ https://sjp.pensoft.net/article/35008/download/pdf/ en

10.1007/s13358-010-0011-2 2010-12-02 sjp

Pentasteria? splendida, a new Early Cretaceous astropectinid starfish from northern Germany Neumann,Christian Jagt,John W.M. Asteroidea Astropectinidae Early Cretaceous Germany New species Swiss Journal of Palaeontology 130(1): 123-127 A new species of early Hauterivian (Early Cretaceous) astropectinid starfish, Pentasteria? splendida, is recorded from strata assigned to the Endemoceras amblygonium ammonite Zone at Engelbostel, near Hannover (northern Germany). Although based solely on a lightly pyritised proximal arm fragment (most likely the result of a predator attack, which is also suggested by possible bite marks), preservation is otherwise excellent, with numerous spines on inferomarginals and adambulacrals retained. Distinguishing features include a distal row of three equal-sized spines on the oral surface of inferomarginals, plus two oblique rows of horseshoe-shaped spine bases on their lateral surface bearing spines of variable length, as well as the absence of large spine pits on superomarginals and adambulacrals. Two oral intermediate ossicles close to the disc margin apparently possess larger spine bases. For the time being, assignment to the family Astropectinidae is based on the occurrence of multiple spines on inferomarginal ossicles and paxilliform adoral ossicles, but placement in the genus Pentasteria is tentative, because superomarginal ossicles have closely spaced small granules rather than scale-like spinelets. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0011-2 https://doi.org/10.1007/s13358-010-0011-2 https://sjp.pensoft.net/article/35009/ https://sjp.pensoft.net/article/35009/download/pdf/ en

10.1007/s13358-010-0013-0 2010-12-02 sjp

Stereom microstructure of columnal latera: a character for assessing phylogenetic relationships in articulate crinoids Simms,Michael Crinoid Articulata Stereom Phylogenetics Swiss Journal of Palaeontology 130(1): 143-154 The stereom microstructure of columnal latera in various articulate crinoids is examined to ascertain its potential application in phylogenetic studies. Most show either a poorly ordered labyrinthic stereom or a more regularly ordered perforate stereom with lumina arranged in an en echelon pattern. Labyrinthic stereom is taxonomically widespread and is interpreted here as the plesiomorphic state. Perforate stereom, typically with an en echelon arrangement of elliptical lumina, appears confined to the Isocrinina and is considered to be apomorphic for that group. The absence of any development of perforate stereom in the bourgueticrinid Democrinus suggests that the bourgueticrinids have affinities with the comatulids rather than with the isocrinids. A second type of perforate stereom, with sinuous or straight lines of circular to elongate lumina, has been found only in Pentacrinites and may be autapomorphic for that group. The shape and spacing of stereom lumina on the columnal latera of different genera of isocrinids displays minor variation that may have some value for assessing phylogenetic affinity at genus and family level in taxa known only from columnals. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0013-0 https://doi.org/10.1007/s13358-010-0013-0 https://sjp.pensoft.net/article/35016/ https://sjp.pensoft.net/article/35016/download/pdf/ en

10.1007/s13358-010-0015-y 2010-12-02 sjp

A new echinoderm Lagerstätte from the Pliensbachian (Early Jurassic) of the French Ardennes Thuy,Ben Gale,Andy Reich,Mike Early Jurassic Echinodermata France Lagerstätte Pliensbachian Swiss Journal of Palaeontology 130(1): 173-185 A succession of clays with thin shell beds from the French Ardennes, dated to the late Early Pliensbachian Davoei Zone and yielding abundant well-preserved remains of all five extant classes of echinoderms, is described here as a new Lagerstätte. The echinoderms occur in the form of isolated ossicles, semi-articulated plate aggregates and abundant intact skeletons with even the most delicate appendices preserved in place and the finest skeletal structures hardly blurred by recrystallisation. The outstandingly good preservation of the echinoderm specimens allows for a morphological assessment of the represented taxa in detail only rarely achievable by fossil material. The material described herein thus significantly contributes to a better understanding of the systematic position and phylogenetic background of many Early Jurassic echinoderm taxa. The echinoderms are considered to have been buried as an autochthonous or at least parautochthonous assemblage among clumps and beds of Modiolus bivalves. The depositional setting most likely represented a relatively shallow, near-shore soft-bottom environment in which conditions repeatedly favoured the settlement and subsequent effective burial of bivalve-echinoderm assemblages, leading to the formation of the thin highly fossiliferous shell beds intercalating the otherwise nearly sterile clays. The new Lagerstätte opens a unique window into the palaeoecology of an extinct shallow-water soft-bottom community closely comparable to recent analogues. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0015-y https://doi.org/10.1007/s13358-010-0015-y https://sjp.pensoft.net/article/35020/ https://sjp.pensoft.net/article/35020/download/pdf/ en

10.1007/s13358-010-0006-z 2010-12-07 sjp

Strange taphonomy: Late Cretaceous Echinocorys Leske (Echinoidea) as a hard substrate in a modern shallow marine environment Donovan,Stephen Lewis,David Biostratinomy Reworked fossils Holasteroids Beachcombing Ichnology Borings Swiss Journal of Palaeontology 130(1): 43-51 The holasteroid Echinocorys is a common, robust echinoid in the Upper Cretaceous–Danian Chalks and limestones of northern Europe. It formed hard substrates that were infested by a variety of encrusters and borers during its life and after death. Echinocorys is also a durable fossil. Tests occur as clasts on the beach at Overstrand, and between Overstrand and Cromer, north Norfolk, eastern England. Reworking from (mainly) coastal sections has reintroduced Chalk Echinocorys into the benthic environment over 70 million years after its death and inhumation, with rare specimens washing up on the beach at these localities. Unsilicified Echinocorys tests form a taphonomic series. The oral surface is the stable resting surface which is commonly not bored unless the exposed Chalk infill is strongly infested by Entobia isp. Clean, unbored tests grade through specimens where the test calcite is perforated by Entobia isp. to remnants where most of the apical surface of the echinoid has been lost by boring, and the Chalk infill is perforated by Caulostrepsis cf. taeniola Clarke, Entobia isp. and rare Gastrochaenolites isp. In contrast, flint steinkerns and external moulds are not bored. Four principal lines of evidence are used to determine the time of occurrence of these borings: (1) comparison with common Chalk borings known from Echinocorys; (2) tests are invariably infilled with well-lithified Chalk, but (with one exception) borings preserve no evidence of prior infilling; (3) the suite of borings are typical of modern lithoclasts on the beach; and (4) flint echinoids preserve no evidence of modern borings. Lack of Cretaceous encrusting organisms is further evidence that suggests most borings may be modern. There is only a limited indication of a mix of modern and ancient (Oichnus isp., indeterminate U-shaped boring) borings as has been noted previously in a belemnite from Overstrand. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0006-z https://doi.org/10.1007/s13358-010-0006-z https://sjp.pensoft.net/article/35003/ https://sjp.pensoft.net/article/35003/download/pdf/ en

10.1007/s13358-010-0008-x 2010-12-07 sjp

Asteroidea (Echinodermata) from the Oxfordian (Late Jurassic) of Savigna, Départment du Jura, France Gale,Andy Asteroidea Oxfordian Jurassic French Jura Swiss Journal of Palaeontology 130(1): 69-89 The asteroid fauna from the Late Oxfordian marls (bifurcatus Zone, stenocycloides Subzone) of Savigna includes 11 taxa, distributed between 8 families, of which 1 (Plumasteridae) is new. A goniasterid of distinctive morphology, Hessaster longimarginalis, is described as new, as is an asteriid, Savignasterias villieri. The material was recovered by surface picking and processing over 1,000 kg of sediment, and includes 28 partial individuals and approximately 2,000 isolated ossicles in excellent preservation, which show fine details of the stereom architecture and additionally allow ontogenetic changes to be described. Detailed comparison with extant asteroids enables diverse ossicle types to be assigned precisely to individual taxa. The phylogenetic relationships of individual fossil species with living taxa are determined using characters derived from numerous skeletal elements, and it is shown that the benthopectinid and pterasterid species present in the Savigna fauna are basal to their respective families. In comparison with other assemblages collected from Jurassic clay facies, the Savigna asteroid fauna is unusually diverse. Importantly, the fauna includes elements typical of present day deep sea environments (bathyal and abyssal), living abundantly in Oxfordian shelf seas of about 50 m depth. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0008-x https://doi.org/10.1007/s13358-010-0008-x https://sjp.pensoft.net/article/35006/ https://sjp.pensoft.net/article/35006/download/pdf/ en

10.1007/s13358-010-0009-9 2010-12-07 sjp

Triassic: the crucial period of post-Palaeozoic crinoid diversification Hagdorn,Hans Crinoids Triassic Diversity Functional morphology Evolutionary biology Palaeoecology Niche adaptation Swiss Journal of Palaeontology 130(1): 91-112 After their near-extinction around the end of the Permian, crinoids recovered during the Triassic and re-occupied almost all ecological niches they had held in Palaeozoic times. Triassic crinoids comprise 33 genera in 12 well-defined families and 5 orders of the subclass Articulata; the systematic position of 4 additional families is unknown. The highest diversity was before the Mid Carnian Wet Intermezzo that caused the extinction of the order Encrinida. Major morphologic changes were connected with the adaptation to various benthic habitats and to pseudoplanktonic and eleutherozoic modes of life. Convergently, the cups of Encrinida and Holocrinida–Isocrinida became cryptodicyclic with large muscular radial facets, arm numbers increased from 5 to more than 300, and the arms of Encrinida became gradually biserial. The Encrinida remained permanently fixed to hardgrounds and acted as frame builders in bioherms. By encrusting bivalve mudstickers some dadocrinids also became secondary soft bottom dwellers. The holocrinid stem evolved preformed rupture points at the lower nodal facets, allowing these crinoids to attach intermittently by cirri. The pseudoplanktonic traumatocrinids evolved extremely long, flexible stems with multiple pore systems and terminal root cirri. Paracomatulids and eocomatulids reduced their stems and adapted to an eleutherozoic mode of life. Somphocrinids miniaturized and remodeled their skeleton towards lightweight construction and adapted to a planktonic life style. After the Triassic no fundamentally novel adaptation was added. Crinoidal limestones, as common in the Palaeozoic, had their last appearance in Middle Triassic times. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0009-9 https://doi.org/10.1007/s13358-010-0009-9 https://sjp.pensoft.net/article/35007/ https://sjp.pensoft.net/article/35007/download/pdf/ en

10.1007/s13358-010-0014-z 2010-12-07 sjp

Gymnodiadema and the Jurassic roots of the Arbacioida (stirodont echinoids) Smith,Andrew B. Echinoids Systematics Cladistic analysis Morocco New taxa Swiss Journal of Palaeontology 130(1): 155-171 The morphology of Gymnodiadema, until now incompletely documented from a single poorly preserved individual from the Callovian of Portugal, is clarified based on a new species from the Bajocian of Morocco. The new species has a plating and tuberculation pattern that is identical to that of the Cretaceous arbacioid Codiopsis, but has perforate tubercles. Gymnodiadema is accompanied in Morocco by the oldest species of Magnosia whose morphology is also described. Both Gymnodiadema and Magnosia are shown to retain their basicoronal interambulacral plates as adults, suggesting arbacioid affinities. The composition of arbacioids is reviewed and a phylogenetic analysis carried out of the better-known relevant taxa. Crown group arbacioids are shown to include the fossil taxa Noetlingaster and Arbia, and thus originated in the late Cretaceous. Like other echinoid groups, therefore, the expansion of arbacioids into deep-water settings occurred from the late Cretaceous onwards. Codiopsis, Gymnodiadema and Magnosia are identified as stem group members. The presence of two morphologically distinct clades of arbacioid in the Bajocian suggests that arbacioids must have split from their nearest living sister group much earlier, probably in the early Jurassic. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0014-z https://doi.org/10.1007/s13358-010-0014-z https://sjp.pensoft.net/article/35017/ https://sjp.pensoft.net/article/35017/download/pdf/ en

10.1007/s13358-010-0001-4 2010-12-08 sjp

Editorial Meyer,Christian Swiss Journal of Palaeontology 130(1): 1-3 info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0001-4 https://doi.org/10.1007/s13358-010-0001-4 https://sjp.pensoft.net/article/34996/ https://sjp.pensoft.net/article/34996/download/pdf/ en

10.1007/s13358-010-0002-3 2010-12-09 sjp

Preface Meyer,Christian Swiss Journal of Palaeontology 130(1): 5-6 info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0002-3 https://doi.org/10.1007/s13358-010-0002-3 https://sjp.pensoft.net/article/34997/ https://sjp.pensoft.net/article/34997/download/pdf/ en

10.1007/s13358-010-0012-1 2010-12-09 sjp

Developmental transformations in Jurassic driftwood crinoids Seilacher,Adolf Crinoids Pseudoplankton Evo-devo Swiss Journal of Palaeontology 130(1): 129-141 The internal, multi-element skeleton of echinoderms can differentiate almost as much as that of the vertebrates. The implied probability of post-mortem disarticulation was bypassed in pelagic species, whose carcasses could sink directly onto toxic sea bottoms. Among them were isocrinids attached to driftwood. In the Toarcian Posidonia Shales they are represented by two easily distinguishable forms: (1) the giant and long-stemmed Seirocrinus was probably a passive tow-net filtrator; (2) the smaller and heavily cirrated Pentacrinites may have produced its own filter current, even though this assumption is in conflict with the distribution of muscles in present-day benthic Isocrinida. In a newly discovered colony of the smaller Early Liassic Pentacrinites fossilis, both strategies are found together. This leads to the hypothesis that the two Toarcian forms may also represent developmental stages of the same species. After the Toarcian, Seirocrinus (as either a taxon or a developmental stage) became extinct, probably due to shipworms reducing the drifting time of logs. In contrast, the proposed feeding style of Pentacrinites allowed it to return to the benthic realm, but in an inverted attitude. During this complex history, most adaptational changes required only heterochronic shifts in the development of tegmen, arms, pinnules, stem, and cirri. Unrelated pseudoplanktonic crinoids of earlier times show convergent adaptations with different pathways. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0012-1 https://doi.org/10.1007/s13358-010-0012-1 https://sjp.pensoft.net/article/35011/ https://sjp.pensoft.net/article/35011/download/pdf/ en

10.1007/s13358-010-0005-0 2010-12-15 sjp

Kionaster petersonae, n. gen. and sp. (Asteroidea), the first fossil occurrence of the Asterodiscididae, from the Miocene of Florida Blake,Daniel Toomey,James Asteroidea Asterodiscididae Miocene Chipola formation Florida Swiss Journal of Palaeontology 130(1): 25-42 Kionaster petersonae, n. gen. and sp., from the Miocene Chipola Formation of Florida, is the first-known fossil member of the extant family Asterodiscididae Rowe. Although abactinal and marginal expressions clearly serve to distinguish the Asterodiscididae, the family was recognized only relatively recently, in part perhaps because assigned genera are few and these occur in traditionally less heavily collected areas. The original inferred presence of reduced numbers of marginal ossicles in the family is rejected. Phylogenetic analysis suggests close affinities between asterodiscidids and Goniaster L. Agassiz, 1836 (Goniasteridae). Kionaster appears closest to the eastern Pacific asterodiscidids rather than Asterodiscides itself, which is widely distributed farther west in the Pacific. Distinctive characters of Kionaster suggest a once-greater diversity within the family. Although data are limited, morphologic similarities and biogeographic distributions suggest familial origin in a low-latitude Western Hemisphere setting and the Atlantic Ocean prior to the closing of the Isthmus of Panama. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2010 Research Article text/html info:doi:10.1007/s13358-010-0005-0 https://doi.org/10.1007/s13358-010-0005-0 https://sjp.pensoft.net/article/35002/ https://sjp.pensoft.net/article/35002/download/pdf/ en

10.1007/s13358-011-0016-5 2011-02-11 sjp

A new genus and species of surgeon fish (Perciformes, Acanthuridae) from the Oligocene of Kanton Glarus, Switzerland Tyler,James Micklich,Norbert Acanthuridae Glarithurus friedmani Scalpel scale Acronurus Oligocene Kanton Glarus Swiss Journal of Palaeontology 130(2): 203-216 The new genus and species of surgeon fish, Glarithurus friedmani (Acanthuridae), from the Lower Oligocene (Rupelian) of Kanton Glarus, Switzerland, differs from all other acanthurid fishes, fossil and extant, by having a single anal-fin basal pterygiophore situated in the first interhaemal space, versus two or more such pterygiophores in all other taxa. The new taxon is based upon a 29-mm SL acronurus stage specimen that probably had already settled onto a benthic substrate from its pelagic larval stage and begun its transformation into a juvenile. It has a scalpel-like dermal spine on the caudal peduncle and a crest on the hyomandibular, which are derived characters that establish it as a member of the clade of higher acanthurins. Within that clade, it is unique because of the great depth of its basipterygium at the subpelvic keel. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0016-5 https://doi.org/10.1007/s13358-011-0016-5 https://sjp.pensoft.net/article/35024/ https://sjp.pensoft.net/article/35024/download/pdf/ en

10.1007/s13358-011-0017-4 2011-04-20 sjp

A new ornithocheirid, Barbosaniagracilirostris gen. et sp. nov. (Pterosauria, Pterodactyloidea) from the Santana Formation (Cretaceous) of NE Brazil Elgin,Ross Frey,Eberhard Barbosania Ornithocheiridae Pterosaur Santana Formation Swiss Journal of Palaeontology 130(2): 259-275 An almost complete, ornithocheirid pterosaur from the Romulado Member of the Santana Formation, NE Brazil is described. The specimen lacks a rostral and dentary median sagittal crest and is sufficiently distinct from other crestless taxa to warrant the erection of a new genus and species, Barbosania gracilirostris gen. et sp. nov. It confirms the absence of a crest as a genuine condition rather than a consequence of ontogenetic immaturity and indicates a shift from the previously observed pattern of suture closure in pterodactyloid pterosaurs, where partial fusion of the extensor tendon process has occurred at a relatively small size. Several specimens showing morphology similar to Brasileodactylus may instead be more closely allied to B. gracilirostris. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0017-4 https://doi.org/10.1007/s13358-011-0017-4 https://sjp.pensoft.net/article/35029/ https://sjp.pensoft.net/article/35029/download/pdf/ en

10.1007/s13358-011-0018-3 2011-06-11 sjp

A new early Smithian ammonoid fauna from the Salt Range (Pakistan) Brühwiler,Thomas Bucher,Hugo Roohi,Ghazala Yaseen,Aamir Rehman,Khalil Ammonoidea Early Triassic Smithian Salt Range Pakistan Biostratigraphy Swiss Journal of Palaeontology 130(2): 187-201 Recent extensive investigations in the Salt Range (Pakistan) yielded abundant, well-preserved ammonoid faunas of earliest to latest Smithian age that provided the basis for a major revision of Smithian ammonoid taxonomy and for the establishment of a high-resolution biostratigraphic sequence. Here, an additional new ammonoid fauna of typical early Smithian affinity from the uppermost part of the Ceratite Sandstone of the Nammal Gorge section is described. The new fauna, termed Euflemingites cirratus beds, is bracketed between the underlying early Smithian “Flemingitesflemingianus beds”, here renamed Clypeoceras superbum beds, and the overlying middle Smithian Brayarditescompressus beds. Comparison with a recently published high-resolution biochronological scheme for the Smithian of the NIM (northern Indian Margin) based on the Salt Range, Spiti (Himachal Pradesh, northern India) and Tulong (South Tibet) basins shows that the Euflemigites cirratus fauna correlates with the Dieneroceras beds from Spiti based on the common occurrence of the ammonoid species Kraffticeras pseudoplanulatum. The trans-panthalassic biogeographical distribution of Euflemingites cirratus allows correlating the new ammonoid fauna with part of the Meekoceras gracilitatis ammonoid zone of western USA. Three new species (Kashmirites weisserti, Arctoceras schalteggeri and Vercherites wyleri) are described. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0018-3 https://doi.org/10.1007/s13358-011-0018-3 https://sjp.pensoft.net/article/35021/ https://sjp.pensoft.net/article/35021/download/pdf/ en

10.1007/s13358-011-0019-2 2011-07-06 sjp

A Ruscinian mammalian microfauna from a fissure filling near Sondershausen (Thuringia, Central Germany) Hellmund,Meinolf Ziegler,Reinhard Karstic fissure filling Muschelkalk Pliocene Central Germany Micromammals Systematics Biostratigraphy Swiss Journal of Palaeontology 131(1): 77-94 The mammalian microfauna from the karstic fissure fill site Sondershausen in Thuringia is presented. It is the first record of Pliocene micromammals in Central Germany and includes 621 identified specimens of 13 species, mostly isolated teeth and only a few jaw fragments. Nearly three quarters of the specimens belong to the dormouse Glis minor. The vespertilionid bats, represented by two Myotis species, make a contribution of ca. 20%. In terms of numbers of specimens, the remaining species are negligible. The micromammal assemblage probably derives from an accumulation of regurgitation pellets from an owl. The fauna correlates with the late Ruscinian Mammal unit MN 15, with the eomyid Eomyops and the flying squirrel Blackia as Miocene holdovers and the cricetids Cseria, Baranomys and Bjornkurtenia as Ruscinian newcomers. The sciurid, the eomyid and in particular, the stunning abundance of the dormouse Glis minor are strong indicators of a forest-dominated environment. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0019-2 https://doi.org/10.1007/s13358-011-0019-2 https://sjp.pensoft.net/article/35043/ https://sjp.pensoft.net/article/35043/download/pdf/ en

10.1007/s13358-011-0021-8 2011-07-15 sjp

A new species of woodpecker (Aves; Picidae) from the early Miocene of Saulcet (Allier, France) De Pietri,Vanesa Manegold,Albrecht Costeur,Loïc Mayr,Gerald Piciformes Saulcet Saint-Gérand-le-Puy Piculoides Fossil birds Early Miocene Swiss Journal of Palaeontology 130(2): 307-314 We describe a new genus and species of woodpecker (Piciformes: Picidae), Piculoides saulcetensis, from the early Miocene (MN1–MN2) of Saulcet, in the “Saint-Gérand-le-Puy” area, central France, which is the earliest definite record of the family. The new species is represented solely by the distal end of a tarsometatarsus, which bears nonetheless diagnostic features that allowed us to place Piculoides saulcetensis in a phylogenetic context. Our results show that the fossil from Saulcet is either a stem-group representative of piculets (Picumninae) and true woodpeckers (Picinae) or of true woodpeckers only. Piculoides saulcetensis is similar to a fragmentary tarsometatarsus of a picid from the late Oligocene of southern Germany, and we thus hypothesize a close relationship between the two. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0021-8 https://doi.org/10.1007/s13358-011-0021-8 https://sjp.pensoft.net/article/35033/ https://sjp.pensoft.net/article/35033/download/pdf/ en

10.1007/s13358-011-0024-5 2011-08-26 sjp

On the osteology of Tapejara wellnhoferi KELLNER 1989 and the first occurrence of a multiple specimen assemblage from the Santana Formation, Araripe Basin, NE-Brazil Eck,Kristina Elgin,Ross Frey,Eberhard Brazil Lower Cretaceous Santana Formation Pterosauria Tapejaridae Osteology Swiss Journal of Palaeontology 130(2): 277-296 The postcranial elements of two similar sized and juvenile individuals, along with a partial skull, are attributed to the Early Cretaceous pterosaur Tapejara wellnhoferi. The remains, recovered from a single concretion of the Romualdo Member, Santana Formation, NE-Brazil, represent the first account of multiple specimens having settled together and allow for a complete review of postcranial osteology in tapejarid pterosaurs. A comparison of long bone morphometrics indicates that all specimens attributed to the Tapejaridae for which these elements are known (i.e. Huaxiapterus, Sinopterus, Tapejara) display similar bivariate ratios, suggesting that Chinese and Brazilian taxa must have exhibited similar growth patterns. An unusual pneumatic configuration, whereby the humerus is pierced by both dorsally and ventrally located foramina, is observed within T. wellnhoferi, while the pneumatic system is inferred to have invaded the hindlimbs via the femur in all members of the Azhdarchoidea. The partial preservation of the endocranial cavity allows for a reconstruction of the tapejarid brain, where despite a small orbit with respect to skull size, the presence of large flocculi and ocular lobes indicate that Tapejara possessed both excellent balancing and visual systems as a consequence of its aerial lifestyle. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0024-5 https://doi.org/10.1007/s13358-011-0024-5 https://sjp.pensoft.net/article/35030/ https://sjp.pensoft.net/article/35030/download/pdf/ en

10.1007/s13358-011-0020-9 2011-08-27 sjp

The Neogene tropical America fish assemblage and the paleobiogeography of the Caribbean region Aguilera Socorro,Orangel Ramos,Maria Paes,Eduardo Costa,Sue Sánchez-Villagra,Marcelo Neogene Caribbean Gatunian Province Teleostean Elasmobranch Swiss Journal of Palaeontology 130(2): 217-240 This first analysis of the marine fish fossil record in the Caribbean region during the Neogene is based on comprehensive new faunal compilation lists at the generic level from basins of nine Central and South American countries during Miocene and Pliocene times. Joint ordination and classification techniques were used to analyze data comprising 236 genera and 346 species. Principal Component Analyses were used to calculate covariance and variance between localities. We identified four subprovinces, representing four different patterns. The subprovince of Venezuela shows distinct and unique features since the Neogene in the diversity of ecosystems represented. The Antillean subprovince has a western orientation and is composed of Jamaica, the Dominican Republic, and the Trinidad islands. The third subprovince combines Panama and Ecuador. It reflects the Pacific faunal influence into the proto-Caribbean and a characteristic benthopelagic fauna. The fourth subprovince is Costarican. Its nektonic fish fauna reflects the overprinting impact over the proto-Caribbean fish fauna mostly due to local paleoenvironmental changes (neritic, estuarine and deep water assemblages), whereby the overall composition of genera is largely not affected (except few lamnids, such as the giant-toothed white sharks and the wide-toothed mako shark). The results of the analyses are concordant with previous ones based on invertebrates and identified regions in need of study (e.g., Colombia, Nicaragua, Honduras, and Brazil). info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0020-9 https://doi.org/10.1007/s13358-011-0020-9 https://sjp.pensoft.net/article/35025/ https://sjp.pensoft.net/article/35025/download/pdf/ en

10.1007/s13358-011-0023-6 2011-08-30 sjp

The long bone histology of Ceresiosaurus (Sauropterygia, Reptilia) in comparison to other eosauropterygians from the Middle Triassic of Monte San Giorgio (Switzerland/Italy) Hugi,Jasmina Eosauropterygia Switzerland/Italy Triassic Bone histology Lifestyle Swiss Journal of Palaeontology 130(2): 297-306 Ceresiosaurus is a secondarily marine reptile that lived during the Middle Triassic (Ladinian–Anisian) in a subtropical lagoonal environment with varying open marine influences. The genus comprises two species, Ceresiosaurus calcagnii and C. lanzi, and represents one of the largest vertebrate of up to 3-m snout-tail length from the UNESCO World Heritage site Monte San Giorgio, which is settled along the Swiss–Italian border. Earlier morphological studies identified this genus as basal sauropterygian still possessing many similarities with the plesiomorphic ancestral terrestrial condition. Interspecific morphological variation was interpreted as indicator for different habit(at) preferences by ascribing two locomotion types for each of the species. In this study, detailed data on the microstructure of the long bones are given and findings were put into a palaeoecological and phylogenetic context in comparison to other sauropterygians from Monte San Giorgio. Results showed that both Ceresiosaurus species retain a calcified cartilaginous core in the medullary region in at least young individuals. They both exhibit cyclical bone growth of lamellar to parallel-fibred bone matrices with undulating incremental growth marks and low to moderate vascularisation (lamellar-zonal bone tissue type). Interspecific variation comprises differences in the distribution of differently organised bone matrices and the size, orientation and number of vascularisation. The vascularisation pattern (abundance and orientation of the canals) of the pachyosteosclerotic long bones of C. calcagnii mostly resembles the histotype of the stratigraphically youngest pachypleurosaurid from Monte San Giorgio, Neusticosaurusedwardsii (except for the presence of primary osteons in the cortex of the former). The bone sample of C. lanzi is only osteosclerotic and most similar to young Nothosaurus (except for the irregular presence of fibrolamellar bone in the latter). The slightly different growth pattern already at young ontogenetic stages might be linked to a different mode of life within the restricted lagoonal basin for Ceresiosaurus, which supports previous studies on the morphological data that ascribed two different locomotion types. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0023-6 https://doi.org/10.1007/s13358-011-0023-6 https://sjp.pensoft.net/article/35032/ https://sjp.pensoft.net/article/35032/download/pdf/ en

10.1007/s13358-011-0022-7 2011-08-30 sjp

New discoveries of glirids and eomyids (Mammalia, Rodentia) in the Early Miocene of the Junggar basin (Northern Xinjiang province, China) Maridet,Olivier Wu,Wen-Yu Ye,Jie Ni,Xi-Jun Meng,Jin Gliridae Eomyidae Early Neogene Central Asia Palaeoenvironment Swiss Journal of Palaeontology 130(2): 315-323 We report herein new discoveries of Gliridae and Eomyidae (Mammalia, Rodentia) from the new Early Miocene locality XJ 200604, located northwest to the Burqin city, northern Xinjiang province, China. These specimens represent three taxa of Gliridae, including a new species (Miodyromys asiamediae nov. sp., Microdyromys aff. orientalis and Eliomys? sp.), and four taxa of Eomyidae (Asianeomys aff. engesseri, Asianeomys sp., Keramidomys sp. and Eomyidae indet). The identification of two forms that are closely related to Microdyromys orientalis and Asianeomys engesseri suggests an Early Miocene age of the locality but does not allow a more precise age determination. The new discoveries of Gliridae and Eomyidae again reveal the relative scarcity of the two families in the Early Miocene of Central Asia, in contrast to the coeval rich European record. Such a discrepancy in taxonomic diversity and abundance is hypothesized as resulting from different environmental evolutions during the Early Miocene, most notably the onset of a mid-latitude dry climate in Central Asia linked to combine effects of the Tibetan Plateau uplift and the retreat of the Paratethys Sea. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0022-7 https://doi.org/10.1007/s13358-011-0022-7 https://sjp.pensoft.net/article/35034/ https://sjp.pensoft.net/article/35034/download/pdf/ en

10.1007/s13358-011-0025-4 2011-09-16 sjp

A new shark and ray fauna from the Middle Miocene of Mazan, Vaucluse (southern France) and its importance in interpreting the paleoenvironment of marine deposits in the southern Rhodanian Basin Vialle,Nicolas Adnet,Sylvain Cappetta,Henri Selachians Middle Miocene Southern France Southern Rhodanian basin Paleoenvironment Swiss Journal of Palaeontology 130(2): 241-258 Recent paleontological excavations of the Middle Miocene sandstones (top of the “Schlier” facies) near Mazan, Vaucluse (southern France) uncovered a rich selachian teeth assemblage including 34 shark and ray species. This great diversity of selachian taxa provides new information about the palaeoenvironmental settings of some Middle Miocene deposits in the southern Rhodanian basin. For instance, the co-occurrence of some deepwater Squaliformes and Rajidae with numerous Carcharhiniformes and Myliobatiformes, usually inhabiting the continental shelf, suggests a deepwater deposit inshore, as adjacent to a submarine canyon area. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0025-4 https://doi.org/10.1007/s13358-011-0025-4 https://sjp.pensoft.net/article/35027/ https://sjp.pensoft.net/article/35027/download/pdf/ en

10.1007/s13358-011-0027-2 2011-11-08 sjp

A new bryozoan genus from the Jurassic of Switzerland, with a review of the cribrate colony-form in bryozoans Taylor,Paul Cyclostomata Convergent evolution Functional morphology Feeding Swiss Journal of Palaeontology 131(2): 201-210 Very few Jurassic bryozoans have been recorded from Switzerland. The discovery in the collections of the Universität Zurich of a very distinctive cyclostome bryozoan from the Aalenian of Gelterkinden in the Basel-Country Canton, warrants the creation of a new monospecific genus, Rorypora gen nov. The type species of Rorypora, Diastopora retiformis Haime, 1854, was originally described from the French Bajocian. This genus has a ‘cribrate’ colony-form comprising flattened bifoliate fronds that bifurcate and coalesce regularly to enclose ovoidal lacunae. Unlike the much commoner fenestrate colony-form, apertures of feeding zooids open on both sides of the fronds. The taxonomic distribution of cribrate colonies in bryozoans is reviewed. They are most common in Palaeozoic ptilodictyine cryptostomes but are also found among Palaeozoic cystoporates and Cenozoic cheilostomes, as well as the single known cyclostome example described here. Cribrate colonies therefore provide a striking example of multiple evolutionary convergence. In contrast to fenestrate colony-forms, feeding currents cannot be channelled through the lacunae in cribrate colonies to generate a one-way flow of water for efficient suspension feeding. Instead, the holes are inferred to be the locations of chimneys over which exhalent currents are vented in opposite directions on either side of the planar colony. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0027-2 https://doi.org/10.1007/s13358-011-0027-2 https://sjp.pensoft.net/article/35057/ https://sjp.pensoft.net/article/35057/download/pdf/ en

10.1007/s13358-011-0029-0 2011-11-11 sjp

Tupaiine tree shrews (Scandentia, Mammalia) from the Yuanmou Lufengpithecus locality of Yunnan, China Ni,Xijun Qiu,Zhuding Prodendrogale Tupaia Scandentia Late Miocene Baodean Swiss Journal of Palaeontology 131(1): 51-60 Tree shrew fossils are extremely rare. Here, we report two new tupaiine tree shrews, Prodendrogale engesseri sp. nov. and Tupaia storchi sp. nov., discovered from the late Miocene deposits of Yuanmou Lufengpithecus locality of Yunnan Province in China. P. engesseri is very close to the slightly younger species P. yunnanica Qiu (Vertebrata PalAsiatica, 24: 308–319, 1986) from the Lufeng Lufengpithecus locality of Yunnan Province. Relatively lower crowns and less trenchant tooth cusps of P. engesseri show that P. engesseri is more primitive than P. yunnanica. Tupaia storchi is a species larger than Palaeotupaia sivalicus Chopra and Vasishat, 1979, T. minor Günther, 1876 and T. javanica Horsfield, 1822, but smaller than all the other extant species of Tupaia and T. miocenica Mein and Ginsburg, 1997. The mesiobuccal side of the lower molar of this species develops a very strong cingulid. It should be interpreted as a primitive condition. Discovery of diverse tree shrew fossils in Yunnan suggests that multiple evolutionary lineages of tree shrews must have coexisted in a very large area in East Asia. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0029-0 https://doi.org/10.1007/s13358-011-0029-0 https://sjp.pensoft.net/article/35040/ https://sjp.pensoft.net/article/35040/download/pdf/ en

10.1007/s13358-011-0028-1 2011-11-15 sjp

Coryphodon, the northernmost Holarctic Paleogene pantodont (Mammalia), and its global wanderings R. Dawson,Mary Pantodont Coryphodon Eocene Arctic Holarctic distribution Swiss Journal of Palaeontology 131(1): 11-22 The pantodont Coryphodon is a frequently found component of early Eocene terrestrial faunas in North America, distributed widely from the Arctic to the Gulf Coast. The most northerly member of this genus of large herbivore is a new species that appears to be closest to the oldest known mid-latitude species, Coryphodon proterus from the Clarkforkian (Cf-2), late Paleocene, of Montana. Coryphodon is widely distributed during the early Eocene across the Holarctic, occurring also in England, Belgium, and France (MP7-9, early Eocene) on the one hand and Kazakhstan, Mongolia, and China (Gashatan-Bumbanian, late Paleocene-early Eocene, Xinjiang, Shandong, and Shanxi) on the other. Although other genera of Coryphodontidae, as well as of other pantodont families, appear to have had more sedentary habits, Coryphodon is noted for its wide distribution. Adaptations to a warm temperate northern climate, including its northern light regime, may be postulated for this genus of pantodont as well as a pattern of dispersal leading to its wide range across the Holarctic. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0028-1 https://doi.org/10.1007/s13358-011-0028-1 https://sjp.pensoft.net/article/35038/ https://sjp.pensoft.net/article/35038/download/pdf/ en

10.1007/s13358-011-0030-7 2011-12-06 sjp

New finds of rodents and insectivores from the Upper Miocene at Plakias (Crete, Greece) De Bruijn,Hans Doukas,Constantin Van Den Hoek Ostende,Lars Zachariasse,Willem Late Miocene Rodentia Insectivora Crete Swiss Journal of Palaeontology 131(1): 61-75 This paper provides new information on the Late Miocene small mammal assemblage from Plakias, which includes a re-evaluation of the rodents described in De Bruijn and Meulenkamp (Proceedings Koninklijke Nederlandse Akademie van Wetenschappen, Series B, 75(1), 54–60, 1972) and a description of the rodents and insectivores collected in 2011. Combined, they show a quite diverse fauna, dominated by the eomyid Eomyops cf. catalaunicus. The new collection yielded a hitherto unknown genus of murid (Cricetinae gen. et sp. indet), which brings, combined with Eumyarion leemanni and Cricetulodon cretensis, the number of murids on three. The previous identifications of the scuirids and glirids have been revised. Insectivores, not know from the original collection, are represented by Erinaceinae gen. et sp. indet, Lantanotheriumsanmigueli and Paenelimnoecus sp. The assemblage is tentatively correlated to the lower part of MN 9, with an estimated age of ~9.9 Ma. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0030-7 https://doi.org/10.1007/s13358-011-0030-7 https://sjp.pensoft.net/article/35041/ https://sjp.pensoft.net/article/35041/download/pdf/ en

10.1007/s13358-011-0032-5 2011-12-08 sjp

Calcaneal proportions in primates and locomotor inferences in Anchomomys and other Palaeogene Euprimates Moyà-Solà,Salvador Köhler,Meike Alba,David Roig,Imma Fossil and extant primates Foot Calcaneal proportions Allometry Grasping Leaping Anchomomys Swiss Journal of Palaeontology 131(1): 147-159 Foot proportions, and in particular the lengthening of the tarsal elements, play a fundamental role in the discussion on the locomotor adaptations of Palaeogene primates. The elongation of the distal portion of the tarsus, particularly the anterior part of the calcaneus, is frequently interpreted as an adaptation to leaping and has played a fundamental role in the reconstruction of the locomotor adaptations of the earliest primates. Here, we report an allometric analysis of calcaneal proportions in primates and other mammals, in order to determine the actual differences in calcaneal proportions. This analysis reveals that primates as a group display a relatively longer distal calcaneus, relative to both total calcaneal length and body mass, when compared with other mammals. Contrary to current expectations, morphofunctional analysis indicates that a moderate degree of calcaneal elongation is not an adaptation to leaping, but it is merely a compensatory mechanism to recover the lost load arm (metatarsal length) when the foot adopts a grasping function, in order to maintain the same locomotor efficiency. Leaping can be inferred only when anterior calcaneal length departs from the scaling of non-specialized primate groups. The role of leaping on the inferred locomotor repertoire of earliest primates needs to be revised considering the results of this work. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0032-5 https://doi.org/10.1007/s13358-011-0032-5 https://sjp.pensoft.net/article/35053/ https://sjp.pensoft.net/article/35053/download/pdf/ en

10.1007/s13358-011-0031-6 2011-12-14 sjp

Large mammals from Rickenbach (Switzerland, reference locality MP29, Late Oligocene): biostratigraphic and palaeoenvironmental implications Mennecart,Bastien Scherler,Laureline Hiard,Florent Becker,Damien Berger,Jean-Pierre Perissodactyla Cetartiodactyla Babameryxengesseri gen. et sp. nov. Cenogram Ecomorphology Chattian Swiss Journal of Palaeontology 131(1): 161-181 Since the first exploitation of the Huppersandstones quarry of Rickenbach (Canton Solothurn, Switzerland) in 1898, many fossils of plants, molluscs, and vertebrates have been discovered. The study of the small mammals brought this locality to international recognition as the type locality for the European mammalian reference level MP29 (latest Oligocene). Our study reviews the terrestrial herbivorous mammals of Rickenbach and aims to reconstruct the palaeoenvironmental and palaeoclimatic conditions in which they lived. The perissodactyls and cetartiodactyls are described and identified: Protapirus sp. (Tapiridae), Ronzotherium romani and Diaceratherium lamilloquense (Rhinocerotidae), Anthracotherium magnum and Microbunodon minimum (Anthracotheriidae), Palaeochoerus pusillus (Suoidea), and Dremotherium guthi, “Amphitragulus” quercyi, “Amphitragulus” feningrei, and Babameryxengesseri gen. et sp. nov. (Ruminantia). Based on the updated faunal list, a cenogram of the locality of Rickenbach is established. We also performed ecomorphologic analyses on ruminants and rhinocerotids. The reconstructed palaeoenvironment of Rickenbach probably corresponded to a savannah woodland affected by a subtropical climate with clear seasonality. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0031-6 https://doi.org/10.1007/s13358-011-0031-6 https://sjp.pensoft.net/article/35054/ https://sjp.pensoft.net/article/35054/download/pdf/ en

10.1007/s13358-011-0034-3 2011-12-15 sjp

Palaeoecology and palaeoenvironment of the Aquitanian locality Ulm-Westtangente (MN2, Lower Freshwater Molasse, Germany) Costeur,Loïc Maridet,Olivier Peigné,Stéphane Heizmann,Elmar Early Miocene Body mass Terrestrial environments Palaeoclimate Mammalian palaeocommunity Swiss Journal of Palaeontology 131(1): 183-199 The mammalian fauna of the German locality Ulm-Westtangente from the Aquitanian Lower Freshwater Molasse is investigated. The fauna is compared to other rich European localities of the same time period. It is shown to be one of the richest localities for fossil mammals and brings interesting insights into the composition of the Aquitanian European faunas. Sixty-one species are identified and high affinities with the French central region are confirmed. Body mass distributions of insectivores, herbivores, omnivores and carnivores are analysed. Altogether, they showed that the environment at Ulm-Westtangente was probably a warm-temperate forest with grassland habitats, although temperature was still difficult to assess. Ulm-Westtangente lies between the Late Oligocene warm-temperate to subtropical conditions prevailing in Europe and the late Early to Middle Miocene very warm subtropical to tropical conditions of the Miocene Climatic Optimum. It thus represents an intermediate stage in the overall climatic evolution of the late Palaeogene–early Neogene of Europe. The comparison of its body mass distribution with a dataset of extant faunas indicates affinities with community structures found in nowadays temperate forests. However, the record of certain types of ectothermic vertebrates at Ulm-Westtangente precludes the presence of a typical temperate climate. The range of carnivore body masses is similar to what is known in extant communities, with species distributed in a restricted size range (small to middle sizes) in comparison to the insectivore/herbivore/omnivore species. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0034-3 https://doi.org/10.1007/s13358-011-0034-3 https://sjp.pensoft.net/article/35055/ https://sjp.pensoft.net/article/35055/download/pdf/ en

10.1007/s13358-011-0026-3 2011-12-16 sjp

Basel–Tuscany, a long-lasting link Rook,Lorenzo Swiss Journal of Palaeontology 131(1): 7-9 info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0026-3 https://doi.org/10.1007/s13358-011-0026-3 https://sjp.pensoft.net/article/35036/ https://sjp.pensoft.net/article/35036/download/pdf/ en

10.1007/s13358-011-0033-4 2011-12-17 sjp

The Genus Eomyops Engesser, 1979 (Rodentia, Eomyidae) from the youngest deposits of the German part of the North Alpine Foreland Basin Prieto,Jérôme Mammal Eomyidae Rodent Miocene Biostratigraphy Bavaria Swiss Journal of Palaeontology 131(1): 95-106 The study of extinct Eomyid rodents represents an important segment of Burkart Engesser’s scientific work. To pay tribute to Burkhard’s work, this paper presents remains of Eomyops Engesser, 1979 from the German Jüngere Serie localities Kleineisenbach, Giggenhausen, Marktl, Hammerschmiede and Hillenloh. Two Eomyops species are recorded, i.e. E. oppligeri Engesser, 1990 and E. catalaunicus (Hartenberger, 1966). A third form, only found at the locality Marktl, is retained in open nomenclature. In spite of the richness of the studied material, the time gap separating the individual localities does not allow to assess precisely the relationships between the species recorded. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2011 Research Article text/html info:doi:10.1007/s13358-011-0033-4 https://doi.org/10.1007/s13358-011-0033-4 https://sjp.pensoft.net/article/35044/ https://sjp.pensoft.net/article/35044/download/pdf/ en

10.1007/s13358-011-0035-2 2012-01-06 sjp

Late Neogene and Quaternary lagomorphs from Tuscany: a revision based on specimens in Basel Naturhistorisches Museum and Florence University collections Angelone,Chiara Rook,Lorenzo Lagomorpha Taxonomy Evolutionary/phylogenetic tendencies Palaeobiogeography Peninsular Italy Late Neogene Early Pleistocene Swiss Journal of Palaeontology 131(1): 127-145 A revision of the Late Turolian (Messinian)–Biharian (Early Pleistocene) lagomorphs from Tuscany kept in the collections of the Basel Naturhistorisches Museum is the basis for increasing our knowledge on the Late Neogene and Quaternary Italian lagomorph record. The study of the NMB collection has been combined with a revision of coeval Tuscan lagomorphs recorded in the collections of the University of Florence. The taxa herein studied and described represent three leporids (Alilepus meini from the Early Messinian of Baccinello V3, Trischizolagus sp. from the latest Messinian of Borro Strolla, and Oryctolagus valdarnensis from the Early Pleistocene of Upper Valdarno) and two ochotonids (Prolagus cf. sorbinii from the Early Messinian of Velona and the latest Messinian to earliest Pliocene of Borro Strolla, and Prolagus aff. sorbinii from the Late Pliocene of Arcille and the Early Pleistocene of Upper Valdarno). The taxonomic study is completed with notes on evolutionary tendencies and palaeobiogeography of the studied species. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-011-0035-2 https://doi.org/10.1007/s13358-011-0035-2 https://sjp.pensoft.net/article/35051/ https://sjp.pensoft.net/article/35051/download/pdf/ en

10.1007/s13358-011-0038-z 2012-01-12 sjp

Tachyoryctoides (Muroidea, Rodentia) fossils from Early Miocene of Lanzhou Basin, Gansu Province, China Wang,Ban-Yue Qiu,Zhan-Xiang Tachyoryctoides Miocene Lanzhou Basin China Swiss Journal of Palaeontology 131(1): 107-126 The Tachyoryctoides fossils found in the 1990s from the Early Miocene of Lanzhou Basin, China, are described as belonging to three species: T. engesseri sp. nov., T. minor sp. nov. and T. kokonorensis, in addition to some specimens that are indeterminate at the species level. The diagnosis of Tachyoryctoides has been reviewed based on all the known species. Detailed character analysis seems to support Aralomys as a junior synonym of Tachyoryctoides. The discovery of a number of Tachyoryctoides species in Lanzhou Basin indicates that Tachyoryctoides might have split into at least two groups even since the Late Oligocene. Judging by its cranial morphology and dental characters, Tachyoryctoides seems to stand rather apart from Rhizomyidae, Spalacidae and Cricetidae, a fact in favor of defending a separate family, Tachyoryctoididae, for Tachyoryctoides and the closely related genera, Eumysodon and Ayakozomys. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-011-0038-z https://doi.org/10.1007/s13358-011-0038-z https://sjp.pensoft.net/article/35050/ https://sjp.pensoft.net/article/35050/download/pdf/ en

10.1007/s13358-011-0037-0 2012-01-13 sjp

A tribute to Burkart Engesser Costeur,Loïc Maridet,Olivier Qiu,Zhanxiang Qiu,Zhuding Swiss Journal of Palaeontology 131(1): 1-6 info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-011-0037-0 https://doi.org/10.1007/s13358-011-0037-0 https://sjp.pensoft.net/article/35035/ https://sjp.pensoft.net/article/35035/download/pdf/ en

10.1007/s13358-011-0036-1 2012-01-13 sjp

Revision and new data on the Early and Middle Miocene soricids (Soricomorpha, Mammalia) from Central and South-Eastern France Hugueney,Marguerite Mein,Pierre Maridet,Olivier Soricidae Heterosoricinae Crocidosoricinae Allosoricinae Paenelimnoecinae Soricinae Early Neogene France Central Massif Region of Lyon New taxa Swiss Journal of Palaeontology 131(1): 23-49 New or poorly known Soricids from the Early Miocene of Central France (Limagne d’Allier) and from the Middle Miocene of South-Eastern France (near Lyon) are studied; one new genus (Viretia) and a new species (Carposorex burkarti) are described. The soricid assemblages of the Early and late Early/Middle Miocene localities are totally different from each other and new information about appearance and evolution of the taxa are introduced. The following are lists of studied taxa for the beginning of the Early Miocene: Clapasorex bonisi, Clapasorex aff. sigei, Carposorex burkarti nov. sp., Soricella cf. discrepans, Oligosorex aff. antiquus and Crocidosoricinae indet, and for the late Early/Middle Miocene Dinosorex sansaniensis, Dinosorex pachygnathus, Heterosorex delphinensis, Miosorex desnoyersianus, Miosorex grivensis, Lartetium dehmi, Lartetium ziegleri, Turiasorex pierremeini, Viretia nov. gen. gracilidens, Paenelimnoecus micromorphus, Paenelimnoecus crouzeli and Hemisorex robustus. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-011-0036-1 https://doi.org/10.1007/s13358-011-0036-1 https://sjp.pensoft.net/article/35039/ https://sjp.pensoft.net/article/35039/download/pdf/ en

10.1007/s13358-012-0039-6 2012-03-30 sjp

A basal phiomorph (Rodentia, Hystricognathi) from the late Eocene of the Fayum Depression, Egypt Sallam,Hesham Seiffert,Erik Simons,Elwyn Africa Oligocene Phiomyidae Phiomys Dur at-Talah Swiss Journal of Palaeontology 131(2): 283-301 The fossil record of phiomorph hystricognathous rodents from the Afro-Arabian Paleogene is important for understanding the origins and dispersal routes of the early crown hystricognaths. Here, we describe a “new” basal phiomorph genus and species, Acritophiomys bowni, based on complete upper and lower dentitions, mandibular fragments, and partial crania from the terminal late Eocene (~34 Ma) Locality 41 (L-41) in the Fayum Depression of northern Egypt. Acritophiomysbowni is the oldest and largest representative of the family “Phiomyidae”, being more or less the same size as contemporaneous gaudeamurids, and is one of the most abundant hystricognaths at L-41. The genus exhibits a mosaic of primitive and derived features, the former shared with primitive hystricognaths, such as Waslamys and Protophiomys from the earliest late Eocene, and the latter shared with Metaphiomys from early Oligocene (~31–29 Ma) sites in the upper sequence of the Jebel Qatrani Formation. Phylogenetic analysis of craniodental features, scored across a number of different hystricognathous groups, consistently places Acritophiomysbowni and members of the genus Phiomys as basal members of the phiomorph stem lineage, implying that the commonly used family “Phiomyidae” is a paraphyletic assemblage. Among other things, this material shows that basal members of the phiomorph clade consistently replaced dP4/4 with permanent P4/4, and suggests an African origin of stem and crown Phiomorpha. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-012-0039-6 https://doi.org/10.1007/s13358-012-0039-6 https://sjp.pensoft.net/article/35067/ https://sjp.pensoft.net/article/35067/download/pdf/ en

10.1007/s13358-012-0042-y 2012-04-22 sjp

New fossil record of Hyaenictitherium pilgrimi (Carnivora: Hyaenidae) from Dhok Pathan Formation of Hasnot, Pakistan Ghaffar,Abdul Akhtar,Muhammad Hyaenidae Dental material Early Pliocene Fossil record Stratigraphic extension Swiss Journal of Palaeontology 131(2): 275-281 New dental material—one maxilla bearing P3 and P4—of Early Pliocene hyaenid Hyaenictitherium pilgrimi from the Dhok Pathan Formation of Hasnot is described and discussed. The presence of this hyaenid from the Early Pliocene (Ruscinian equivalent) deposits at Hasnot is an important fossil record of this species from the Siwalik continental deposits of Pakistan. The purpose of the paper is to provide more information about the fossil record and its stratigraphic extension from Late Miocene to Early Pliocene from the Siwalik continental deposits. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-012-0042-y https://doi.org/10.1007/s13358-012-0042-y https://sjp.pensoft.net/article/35065/ https://sjp.pensoft.net/article/35065/download/pdf/ en

10.1007/s13358-012-0040-0 2012-04-22 sjp

New vertebrate trackways from the autochthonous cover of the Aiguilles Rouges Massif and reevaluation of the dinosaur record in the Valais, SW Switzerland Cavin,Lionel Avanzini,Marco Bernardi,Massimo Piuz,André Proz,Pierre-Alain Meister,Christian Boissonnas,Jean Meyer,Christian Chirotheriidae Mesozoic Alps Megatracksite Chirotherium cf. barthii Swiss Journal of Palaeontology 131(2): 317-324 A new tracksite located in the Mesozoic autochthonous series covering the Aiguilles Rouges Massif, circa 7 km to the NNE of the tracksite of the Vieux Emosson, is briefly described. The trampled bed is most likely coeval with the outcrop in the Vieux Emosson area. Two poorly preserved quadrupedal trackways, almost parallel, measure 9.8 and 8 m in length, respectively. They are referred to the Chirotheriidae ABEL, 1835 form-family. A short and well-preserved quadrupedal trackway, composed of two manus-pes couples, is assigned to Chirotherium cf. barthii KAUP, 1835. A reinterpretation of the Vieux Emosson ichnotaxa reveals that most tracks, if not all, belong to indeterminate chirotheriid and that no clear evidence of dinosaur footprints is observed. The trampled bed of the cover of the Aiguilles Rouges Massif probably forms a megatracksite, which is Early or Middle Triassic in age. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-012-0040-0 https://doi.org/10.1007/s13358-012-0040-0 https://sjp.pensoft.net/article/35072/ https://sjp.pensoft.net/article/35072/download/pdf/ en

10.1007/s13358-012-0041-z 2012-05-20 sjp

On some anthracotheriid (Artiodactyla, Mammalia) remains from northern Greece: comments on the palaeozoogeography and phylogeny of Elomeryx Kostopoulos,Dimitris S. Koufos,George Christanis,Kimon Bothriodontinae Elomeryx Greece Oligo-Miocene Phylogeny Palaeogeography Swiss Journal of Palaeontology 131(2): 303-315 A few isolated mammal teeth from some Greek coal samples of unknown origin represent a small bothriodontine anthracotheriid, ascribed to Elomeryx. Analysis of the coalification stage of the fossil-bearing coal samples indicates the Lower Miocene Moschopotamos coal pits (Katerini Basin) as the most probable site of origin. The studied teeth are metrically close to E. crispus from Western Europe but share dental apomorphies with E. borbonicus, and E. japonicus and along with Elomeryx material from some Greek and Turkish sites pose a number of systematic, biochronologic, zoogeographic and phylogenetic questions. In the light of new evidence it seems that a small but advanced Elomeryx spanned the Oligo-Miocene boundary of S. Balkans. Furthermore, a revision of the old southern Balkan record together with a parsimony analysis suggest that Bakalovia is a first stage within the evolutionary history of Elomeryx, which complicated phylogeography is further discussed. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-012-0041-z https://doi.org/10.1007/s13358-012-0041-z https://sjp.pensoft.net/article/35068/ https://sjp.pensoft.net/article/35068/download/pdf/ en

10.1007/s13358-012-0043-x 2012-05-31 sjp

Aspistor verumquadriscutis, a new fossil species of sea catfishes (Siluriformes; Ariidae) from the upper Miocene of Venezuela Aguilera,Orangel Marceniuk,Alexandre Ariidae Urumaco Formation Neogene Palaeontology Swiss Journal of Palaeontology 131(2): 265-274 The Late Miocene Urumaco Formation, Northwestern Venezuela, one of the most fossiliferous units in the Neogene of tropical America, represents a shallow, marginal marine to deltaic wetland and fluvial system. A new extinct species of sea catfishes is described from the Urumaco Formation. Aspistor verumquadriscutis n. sp. is placed in the genera Aspistor based on five synapomorphies shared with modern congeners: epioccipital dorsally exposed, parieto-supraoccipital posterior margin convex, nuchal plates forming a large butterfly-shaped or moon-shaped structure, anterior margin of nuchal plate slightly concave, and nuchal plate overlapping parieto-supraoccipital. The new fossil species is distinguished from its modern congeners by having a shorter parieto-supraoccipital process, and a larger and longer nuchal plate, nuchal plate length 0.9–1.0 in parieto-supraoccipital process length (vs. 1.1–1.7 in A. luniscutis), and nuchal-plate width at medial area 0.9–1.0 in parieto-supraoccipital process length (vs. 1.1–1.5 in A. luniscutis); nuchal plate granulose over its entire surface (vs. with half lateral surface smooth in A. quadriscutis), nuchal plate subquadrangular shaped, almost as long as wide (vs. nuchal plate subtrapezoidal or butterfly shaped, anterior portion always narrower than the posterior portion in A. quadriscutis), and lateral margin of the nuchal plate straight (vs. with a constriction at the medial portion in A. quadriscutis). info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-012-0043-x https://doi.org/10.1007/s13358-012-0043-x https://sjp.pensoft.net/article/35064/ https://sjp.pensoft.net/article/35064/download/pdf/ en

10.1007/s13358-012-0044-9 2012-06-06 sjp

Crinoids from the Middle Jurassic (Bajocian–Lower Callovian) of Ardèche, France Hess,Hans Crinoids Bajocian Bathonian Callovian Ardèche Taxonomy Taphonomy Palaeoecology Swiss Journal of Palaeontology 131(2): 211-253 Several Middle Jurassic outcrops in the Ardèche Department near La Voulte-sur-Rhône and St-Étienne-de-Boulogne are rich in the remains of crinoids, but these were known from surface collections only and were not described using present standards of systematics. This paper brings the taxonomic status of the previously described crinoids up to date, reassesses the systematic position of some of the species based on cups and describes new forms. Sampling and washing of bulk material from the Lower Bathonian of the La Pouza locality yielded nearly 100,000 crinoid ossicles. Among them are rare comatulids with the following recognized as new: Andymetragalei n. g., n. sp., Palaeocomaster messingi n. sp., Singillatimetra inordinata n. g., n. sp. and Solanocrinitesvoultensis n. sp. These forms supplement the meagre record of Middle Jurassic comatulids and indicate that this group radiated well before the Late Jurassic. The Cyrtocrinida constitute the bulk of the crinoids and they are dominated by Cyrtocrinus praenutans n. sp. from which nearly all parts of the skeleton are described in their morphological variability. The La Pouza site furnished the additional new cyrtocrinids, Praetetracrinus bathonicus n. sp. and Phyllocrinusvoultensis n. sp. The material also includes numerous remains of the isocrinids Isocrinus dumortieri (de Loriol), Balanocrinus dumortieride Loriol, Balanocrinus pacomeide Loriol and Balanocrinus inornatus (d’Orbigny), which are described in some detail, including brachials. From the Upper Bajocian–Lower Bathonian locality of Pont des Étoiles, Pentacrinites ausichi n. sp. and the cyrtocrinid Scutellacrinus tenuis n. g., n. sp. are new to science. The results demonstrate that the Middle Jurassic crinoids from the Ardèche are one of the important and diverse Mesozoic crinoid faunas. Some forms bridge the gap between the Early Jurassic and the Late Jurassic hardground faunas of cyrtocrinids. Cyrtocrinus praenutans n. sp., a form similar to Cyrtocrinus nutans (Goldfuss) from the Oxfordian, is described as a separate species despite some overlapping phenotypic variability of cups and columnals. Pathological deformations on all types of ossicles of C. praenutans n. sp. are ascribed to the epizoan commensal Oichnus paraboloides Bromley. Different species are dominant at the different Bathonian localities, namely C. praenutans n. sp. at La Pouza and Phyllocrinus fenestratus (Dumortier) and Lonchocrinus dumortieri (de Loriol) at La Clapouze. Preservation and rock formation of the Upper Bajocian–Lower Bathonian Isocrinus nicoleti (Thurmann) at Pont des Étoiles suggests that this form lived in rather shallow and turbulent water. The dominance of cyrtocrinids and the presence of all growth stages and parts of the skeleton at La Pouza and La Clapouze suggest a deeper palaeoenvironment, with some transport of the ossicles. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-012-0044-9 https://doi.org/10.1007/s13358-012-0044-9 https://sjp.pensoft.net/article/35059/ https://sjp.pensoft.net/article/35059/download/pdf/ en

10.1007/s13358-012-0045-8 2012-06-06 sjp

Significance of the trace fossil Balanoglossites Mägdefrau, 1932 from the Lower Cretaceous Guneri member (Bhuj formation) of the Guneri dome, Kachchh, India Desai,Bhawanisingh Saklani,Rajendra Ichnogenus Balanoglossites Guneri member Bhuj formation Kachchh Swiss Journal of Palaeontology 131(2): 255-263 The Guneri dome, situated in the Western Kachchh, is famous for its prominent exposures of Lower Cretaceous sandstone-dominated Guneri member belonging to the Bhuj formation. The ichnogenus Balanoglossites Mägdefrau, 1932 is reported for the first time from the Indian subcontinent and is represented by B. triadicus and B. ramosus, occurring in association with the tear-shaped boring Gastrochaeonolites. These trace fossils occur as a part of two, laterally extensive Glossifungites ichnofacies surface, representing omission suite assemblage. The detailed analysis of the trace fossil Balanoglossites along with lithofacies analysis suggests that it belongs to the Glossifungites ichnofacies surface and this trace fossil bearing surface corresponds to the Lower Cretaceous regressive phase that marks the unconformity of other parts of the Kachchh basin. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-012-0045-8 https://doi.org/10.1007/s13358-012-0045-8 https://sjp.pensoft.net/article/35061/ https://sjp.pensoft.net/article/35061/download/pdf/ en

10.1007/s13358-012-0046-7 2012-08-10 sjp

Erratum to: On the swimming function of crinoid cirri Baumiller,Tomasz Janevski,G. Swiss Journal of Palaeontology 132(1): 79-79 info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Erratum text/html info:doi:10.1007/s13358-012-0046-7 https://doi.org/10.1007/s13358-012-0046-7 https://sjp.pensoft.net/article/35088/ https://sjp.pensoft.net/article/35088/download/pdf/ en

10.1007/s13358-012-0047-6 2012-09-07 sjp

Erratum to: On some anthracotheriid (Artiodactyla, Mammalia) remains from northern Greece: comments on the palaeozoogeography and phylogeny of Elomeryx Kostopoulos,Dimitris S. Koufos,George Christanis,Kimon Swiss Journal of Palaeontology 132(1): 77-77 info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Erratum text/html info:doi:10.1007/s13358-012-0047-6 https://doi.org/10.1007/s13358-012-0047-6 https://sjp.pensoft.net/article/35087/ https://sjp.pensoft.net/article/35087/download/pdf/ en

10.1007/s13358-012-0048-5 2012-12-07 sjp

The pitfalls of extrapolating modern depth ranges to fossil assemblages: new insights from Middle Jurassic brittle stars (Echinodermata: Ophiuroidea) from Switzerland Thuy,Ben Meyer,Christian Ophiomycetidae Ophiacanthidae Ophiuroids Palaeobathymetry Taxonomy Swiss Journal of Palaeontology 132(1): 5-21 Depth reconstruction based on the extrapolation to fossil assemblages of present-day depth ranges of closely related groups is one of the most widely used approaches in palaeobathymetry. Here, we assess the ophiuroid fauna of the Bajocian to Bathonian (Middle Jurassic) Hauptrogenstein Formation and coeval formations in Switzerland with respect to the depth ranges of extant members of the groups identified. In addition to previously known taxa, we describe three new species, one assignable to the extant genus Ophiotholia within the family Ophiomycetidae (resurrected herein), and two belonging to new genera within the family Ophiacanthidae. The Hauptrogenstein ophiuroid fauna is shown to display a striking similarity to modern bathyal brittle star assemblages. In combination with taphonomic evidence of the autochthonous nature of the ophiuroid occurrences, the direct extrapolation of present-day depth ranges, as performed in various previous studies, would imply the Hauptrogenstein Formation to have been deposited in a bathyal setting. This, however, is in stark contrast with the generally accepted, sedimentology-based concept of this unit as a very shallow, high-energy carbonate platform deposit. Evidently, direct extrapolation of modern depth distribution patterns fails to provide a reliable palaeobathymetrical assessment here. In this respect, the case of the Hauptrogenstein ophiuroid fauna serves as a remarkable example to stress the pitfalls of assemblage-based palaeodepth estimates: (1) depth distribution patterns might not be controlled by water depth, or not even by a factor directly related to depth, (2) habitat preferences of a group might have changed through time without being reflected by morphological modifications and (3) shifts in depth ranges might occur due to the rise or extinction of groups interacting with the organism in question. Thus, extrapolation of present-day depth ranges to ancient communities can only produce reliable palaeodepth estimates if there is a mechanistic explanation why organisms are confined to a particular depth. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2012 Research Article text/html info:doi:10.1007/s13358-012-0048-5 https://doi.org/10.1007/s13358-012-0048-5 https://sjp.pensoft.net/article/35078/ https://sjp.pensoft.net/article/35078/download/pdf/ en

10.1007/s13358-012-0049-4 2013-01-16 sjp

Curiouser and curiouser: more on reworked Echinocorys (Echinoidea; Late Cretaceous) on the beaches of north Norfolk, eastern England Donovan,Stephen Biostratinomy Reworked fossils Holasteroids Borings Episkeletozoans Swiss Journal of Palaeontology 132(1): 1-4 A new collection of tests of the Chalk (Late Cretaceous) holasteroid echinoid Echinocorys ex gr. scutata Leske, occurring as clasts on the beach between Overstrand and Cromer, north Norfolk, England, show a range of features that have not been discussed hitherto. Unlike the previous report of similar reworked tests from the same locality, specimens are commonly not bored; where bored, Entobia and Caulostrepsis are commonest, and a sinuous boring (?) or burrow (?) immediately beneath the test surface is left in open nomenclature. Encrusting episkeletozoans, both Recent (bryozoans, serpulids, spirorbidae) and Late Cretaceous (bivalve? or brachiopod?, crinoid) are present on some better preserved tests. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-012-0049-4 https://doi.org/10.1007/s13358-012-0049-4 https://sjp.pensoft.net/article/35076/ https://sjp.pensoft.net/article/35076/download/pdf/ en

10.1007/s13358-012-0050-y 2013-02-12 sjp

Taphonomy and palaeoecology of the green Devonian gypidulid brachiopods from the Aferdou El Mrakib, eastern Anti-Atlas, Morocco Tessitore,Lorena Schemm-Gregory,Mena Korn,D. Wild,Ferdinand Naglik,Carole Klug,Christian Brachiopods Taphonomy Palaeoecology Reef-mounds Devonian Morocco Swiss Journal of Palaeontology 132(1): 23-44 On Aferdou El Mrakib, a large reef mound in the Maïder region (Anti-Atlas, Morocco), thick-shelled gypidulids of two genera are locally very abundant. Like Stringocephalus in the shallow water limestone formations in Germany, these Moroccan brachiopods of the genera Devonogypa and Ivdelinia often display greenish shells. By analysing these shells by EDX, it turned out that the colour was possibly caused by impurities of Fe2+-ions. The concentration varies, indicating that the colour is less dependent on the concentration than on shell thickness, because only the thickest parts of the shells appear green and thin-shelled forms never display the green colour. There is also some indication that the Fe content increases towards deeper shell layers (further away from the surface). In addition, we examined the quality and spatial distribution of sublethal injuries in over 200 specimens of Devonogypa and Ivdelinia. Shape, spatial distribution on the shells, and abundance of the sublethal injuries support the hypotheses that (1) the injuries had several causes, (2) some of these were inflicted by predators, probably cephalopods, and (3) many fractures and deformations might have been caused by the brachiopod shells hitting each other in dense populations in agitated water. The existence of dense clusters, built by the association of members of both genera or of only one taxon, is corroborated by the patchy occurrence of these brachiopods. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-012-0050-y https://doi.org/10.1007/s13358-012-0050-y https://sjp.pensoft.net/article/35081/ https://sjp.pensoft.net/article/35081/download/pdf/ en

10.1007/s13358-013-0051-5 2013-03-27 sjp

Neogene Eastern Amazon carbonate platform and the palaeoenvironmental interpretation Aguilera,Orangel Guimarães,José Moraes-Santos,Heloisa Amazon Carbonate Pirabas Palaeoenvironmental Palynology Crustacea Swiss Journal of Palaeontology 132(2): 99-118 The Early Miocene Pirabas Formation represents extensive carbonate and siliciclastic belts deposited in marine coastal environments along the Eastern Amazon coast. This Formation was studied in its palynological, palaeocarcinological and sedimentary facies, in order to develop a model of its depositional processes, faunal and floral assemblages and the sedimentary environments, as observed in the B17 mine (Capanema, Pará). The sedimentary records consist mostly of light gray to greenish gray mudstones with tidal bedding, calciferous sandstones, stratified biocalcirudites and levels with conglomerates deposited in a carbonate/siliciclastic transitional system with lagoon, tidal flat, flood-tide delta and foreshore environments. Eighteen palynomorph species were identified in the tidal flat deposits including 1 alga, 3 fungi, 5 pteridophytes, and 9 angiosperms. Among the latter, mangrove pollen and spores of Zonocostites ramonae, Zonocostites minor, and Deltoidospora adriennis are reported. Nine species of crustacean decapods were recognized in the foreshore deposits, comprising 1 Callianassoidae, 2 Calappidae, and 6 Portunidae, represented by Euphylax, †Necronectes, Portunus, and Scylla, the ecology of which is associated with beaches of marginal lagoons. The main factor of the formation of these carbonate environments is assumed to have been related to the lack of a large-scale drainage system such as the Amazon River basin in the transition Oligocene–Miocene, which may also have influenced carbonate production and resulted in a strong decrease of palaeodischarges from incipient river systems along the Amazon coast. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0051-5 https://doi.org/10.1007/s13358-013-0051-5 https://sjp.pensoft.net/article/35091/ https://sjp.pensoft.net/article/35091/download/pdf/ en

10.1007/s13358-013-0052-4 2013-03-28 sjp

Ariid sea catfishes from the coeval Pirabas (Northeastern Brazil), Cantaure, Castillo (Northwestern Venezuela), and Castilletes (North Colombia) formations (early Miocene), with description of three new species Aguilera,Orangel Moraes-Santos,Heloisa Costa,Sue Ohe,Fumio Jaramillo,Carlos Nogueira,Afonso Ariidae Catfish Miocene Caribbean South America Swiss Journal of Palaeontology 132(1): 45-68 Ariidae catfish are described from the early Miocene Pirabas Formation in northeastern Brazil, Cantaure and Castillo formations in northwestern Venezuela, and Castilletes Formation in North Colombia. A skull from the Pirabas Formation is described as Cathoropsgoeldii, n. sp. and an otolith is identified as Cathorops sp. The otoliths from Cantaure, Castillo and Castilletes formations are described as Cantarius nolfi n. sp. and Bagreprotocaribbeanus n. sp. These coeval lithostratigraphic units reflect the Proto-Caribbean conditions and the shallow water tropical palaeoenvironment during the Miocene, particularly associated with marine coastal lagoon and estuarine influence. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0052-4 https://doi.org/10.1007/s13358-013-0052-4 https://sjp.pensoft.net/article/35082/ https://sjp.pensoft.net/article/35082/download/pdf/ en

10.1007/s13358-013-0053-3 2013-04-23 sjp

The first tooth set of Ptychodus atcoensis (Elasmobranchii: Ptychodontidae), from the Cretaceous of Venezuela Carrillo-Briceño,Jorge Domingo Lucas,Spencer Cretaceous Venezuela Elasmobranchii Ptychodontidae Ptychodus Swiss Journal of Palaeontology 132(1): 69-75 Ptychodus atcoensis is a characteristic Late Cretaceous durophagous shark, with a fossil record that was previously known exclusively from the Coniacian Atco Formation in Texas, USA, North America. We illustrate and describe for the first time a partial articulated tooth set of P. atcoensis, from the Cretaceous of the Venezuelan Andes, representing the only known record of this species outside of North America, thus significantly increasing the palaeobiogeographic distribution of this taxon. This partial tooth set also documents characteristic variation in the teeth of P. atcoensis that will allow isolated teeth of the species to be more readily identified and located in the dentition. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0053-3 https://doi.org/10.1007/s13358-013-0053-3 https://sjp.pensoft.net/article/35085/ https://sjp.pensoft.net/article/35085/download/pdf/ en

10.1007/s13358-013-0055-1 2013-05-24 sjp

The silty shale Taquaral Member of the early Permian Irati Formation (Paraná Basin, Brazil). Paleontology and paleoenvironments Chahud,Artur Petri,Setembrino Crustacea Taquaral Member Irati Formation Paraná Basin Osteichthyes Swiss Journal of Palaeontology 132(2): 119-128 Two facies are recognized in the Taquaral Member, base of the Artinskian Irati Formation, Parana Basin, Brazil: (1) The sandstone and conglomerate facies, mostly present in the lower part of the member, is thin, commonly 10 cm, exceptionally 1 m thick; and (2) the silty shale facies overlaying the former. Some sandy lenticular beds may occur in the lowermost shale strata. The silty shale facies is thicker (5–30 m), more homogeneous and more widespread than the sandy facies. Facies has yielded crustaceans and fish remains as the only recovered fossils. Other taxa reported by previous authors without formal descriptions and illustrations were never found by later researches. The scrutiny of the paleontological content of the silty shale is here presented by the first time and constitutes one of the purposes of this contribution. The fossil content allowed the proposition of a paleoenvironment of deposition, without a direct connection to open ocean. Some of the species may have been adapted to the new conditions, brackish, from older marine taxa, not yet discovered or stripped off by erosion. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0055-1 https://doi.org/10.1007/s13358-013-0055-1 https://sjp.pensoft.net/article/35092/ https://sjp.pensoft.net/article/35092/download/pdf/ en

10.1007/s13358-013-0054-2 2013-07-25 sjp

Cenomanian rotaliids (Foraminiferida) from Oman and Morocco Piuz,André Meister,Christian Rotorbinella R. mesogeensis Pararotalia P. boixae P. tuberculifera Cretaceous Tethys Swiss Journal of Palaeontology 132(2): 81-97 The small rotaliids (Foraminiferida) found in Cenomanian rock thin sections of Oman and Morocco are diversified. A continuum of morphotypes is divided within 3 taxa described as subspecies of Rotorbinella mesogeensis Tronchetti 1981 from which they share many morphological characteristics. According to features, including shell shape and size, and spiral thickening of the wall, they are named R. m. microformis ssp. nov., R. m. medioformis ssp. nov. and R. m. mesogeensis ssp. nov., the latter being the typical form of Tronchetti 1981. The subspecies mesogeensis is a biostratigraphical marker of the Cenomanian while microformis is known since the Late Albian up to the Late Cenomanian (possibly Early Turonian). Pararotalia boixae sp. nov. comprises specimens previously attributed to P. tuberculifera Reuss 1862 pro parte. This Cenomanian new species (with Campanian affinis forms) is characterized by morphological features that clearly distinct it from the type of Reuss. We found it in the Cenomanian of Oman, but not in contemporaneous Moroccan sediments. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0054-2 https://doi.org/10.1007/s13358-013-0054-2 https://sjp.pensoft.net/article/35090/ https://sjp.pensoft.net/article/35090/download/pdf/ en

10.1007/s13358-013-0057-z 2013-08-14 sjp

A new method to determine volume of bromalites: morphometrics of Lower Permian (Archer City Formation) heteropolar bromalites Shelton,Christen Orthacanthus Spiral coprolite Texas Amphipolar Swiss Journal of Palaeontology 132(2): 221-238 Lower Permian vertebrates from both terrestrial and aquatic organisms have been collected from Archer County, Texas, for over a century. These include preserved shark cartilage and spiral bromalites presumed to have been produced by freshwater sharks of the genus Orthacanthus. Specimens were collected in the newly named Archer City Bonebed V occurring in the Archer City Formation. Physical characteristics (length, width, height, mass, eccentricity, volume, and density) were measured and recorded for 300 spiral bromalites and compared by linear regression analysis. The spiral bromalites had an average length of 31.74 mm; width 14.43 mm; height 10.51 mm, and mass 7.971 g. Eccentricity ranged from 0.9 to 0.06. All of these values follow a normal distribution. In addition to the collection of this statistical data, a new formula is proposed to help determine the volume of these elliptical fossils when volume determination by water displacement is not an option. The percent difference between the observed volumes obtained by water displacement and calculated volumes ranged from 0.04 to 56 %. Ninety-five percent of the statistical sample had a percentage difference of <30. This data, if compiled with data from the analysis of specimens from other localities, may ultimately reveal size groupings that could reflect the presence of previously unknown taxa that possessed a spiral valve and coexisted with the Orthacanthus sharks. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0057-z https://doi.org/10.1007/s13358-013-0057-z https://sjp.pensoft.net/article/35096/ https://sjp.pensoft.net/article/35096/download/pdf/ en

10.1007/s13358-013-0059-x 2013-08-21 sjp

Balanocrinus and other crinoids from Late Jurassic mudstones of France and Switzerland Hess,Hans Crinoids Oxfordian Jura Taxonomy Swiss Journal of Palaeontology 133(1): 47-75 Late Jurassic mudstones of France and Switzerland are rich in remains of the isocrinid Balanocrinus. From the early Late Oxfordian of Savigna (Département du Jura, France) Balanocrinus brachiospina is described as new; the material includes all growth stages and skeletal elements, allowing the reconstruction of the animal and description of ontogenetic changes. The remains of Balanocrinus from Savigna are compared with Balanocrinus subteres (Münster in Goldfuss) from the Middle Oxfordian sponge facies of Holderbank (northern Switzerland) and with Balanocrinus pentagonalis (Goldfuss) from the Early Oxfordian of Les Rouges-Terres (Canton of Jura, Switzerland. The present material enables improved diagnoses of the two common Oxfordian species, B. subteres and B. pentagonalis. The Savigna locality includes two rare new comatulids, Palaeocomaster musculosus n. sp. and Andymetra donovani n. sp. The late Early Oxfordian locality of Andelot-Morval near Saint-Amour (Département du Jura, France) furnished B. brachiospina n. sp., and the comatulids are represented by Palaeocomaster musculosus n. sp., Archaeometra scrobiculata (Goldfuss) and Semiometra petitclerci (Caillet). The paracomatulid Paracomatula morator n. sp. from Andelot is the last representative of the group. Numerous remains of the cyrtocrinid Tetracrinus galei n. sp. supplement the Andelot fauna. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0059-x https://doi.org/10.1007/s13358-013-0059-x https://sjp.pensoft.net/article/35105/ https://sjp.pensoft.net/article/35105/download/pdf/ en

10.1007/s13358-013-0058-y 2013-08-30 sjp

Smithian ammonoid faunas from Utah: implications for Early Triassic biostratigraphy, correlation and basinal paleogeography Brayard,Arnaud Bylund,Kevin Jenks,James Stephen,Daniel Olivier,Nicolas Escarguel,Gilles Fara,Emmanuel Vennin,Emmanuelle Ammonoids Early Triassic Smithian Utah Biostratigraphy Paleogeography New genus and species Swiss Journal of Palaeontology 132(2): 141-219 Intensive sampling of the lower portion of the Thaynes and Moenkopi Groups (Lower Triassic) at separate localities within the Confusion Range, Pahvant Range, Mineral Mountains, Star Range, Kanarraville, Cedar City, Torrey and San Rafael Swell areas (mainly central and southern Utah, USA) leads to the recognition of a new key regional Smithian ammonoid succession. The new biostratigraphical sequence, which is more precise than the long-recognized Meekocerasgracilitatis and Anasibiriteskingianus Zones, comprises twelve subdivisions, thus resulting in a sequence with much higher resolution that can be correlated not only with other western USA sites, but also with major worldwide localities as well. Middle and late Smithian faunas contain many taxa with wide geographic distribution, thus enabling long-distance correlation with faunal successions from other regions (e.g., British Columbia, Canadian Arctic, South China, Spiti and Oman). New assemblages from the lowermost beds are the least diversified and poorest preserved; they represent the earliest early/middle Smithian ammonoid faunas reported from the western North American basin. They highlight (a) the sudden Smithian advancement of the marine transgression within this epicontinental sea, (b) that this event is diachronous, and (c) that the paleotopography of the basin most likely was highly irregular. The newly obtained ammonoid succession also allows us to date and follow the transgression from the northern and central part of the basin to the southwesternmost and southeasternmost parts, which were reached during the late Smithian (Anasibiriteskingianus beds). In addition, we briefly discuss the now-limited previous regional biozonation in the light of these new results. One new genus (Minersvillites) and nine new species (Kashmirites utahensis, Kashmirites confusionensis, Kashmirites stepheni, ?Xiaoqiaoceras americanum, Minersvillites farai, Inyoites beaverensis, Meekoceras olivieri, Meekoceras millardense, Vercherites undulatus) are also described. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0058-y https://doi.org/10.1007/s13358-013-0058-y https://sjp.pensoft.net/article/35095/ https://sjp.pensoft.net/article/35095/download/pdf/ en

10.1007/s13358-013-0062-2 2013-09-21 sjp

Balanocrinus (Crinoidea) from the Jurassic: species concept, reconstruction, ontogeny, taphonomy and ecology Hess,Hans Balanocrinus Jurassic Reconstruction Ontogeny Taphonomy Ecology Swiss Journal of Palaeontology 133(1): 35-45 Early and Late Jurassic mudstones of Europe are rich in remains of the isocrinid Balanocrinus. Recently collected material from the Early Pliensbachian of Sedan (France), from the Oxfordian of Andelot-Morval and Savigna (Département du Jura, France), and Les Rouges-Terres (Canton of Jura, Switzerland) adds significantly to the knowledge of the most important Jurassic species. The Oxfordian faunas that also include isocrinids, comatulids and a cyrtocrinid are the subject of a parallel publication. In the present paper intact specimens of Balanocrinus gracilis (Charlesworth) from Sedan, including early growth stages, and early ontogenetic stages of Balanocrinus brachiospina Hess from Savigna are described. The material from Savigna allows reconstruction of the animal and a comparison with the type species, Balanocrinus subteres (Münster in Goldfuss), for which columnals from the Middle Oxfordian sponge facies of Holderbank (northern Switzerland) and cup plates previously described from Germany are used. The taphonomy and palaeoecology of Balanocrinus occurrences in mudstones of Early to Late Jurassic localities of England, France and Germany are discussed and compared with beds of Chariocrinus from the Early and Middle Jurassic of Switzerland. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0062-2 https://doi.org/10.1007/s13358-013-0062-2 https://sjp.pensoft.net/article/35100/ https://sjp.pensoft.net/article/35100/download/pdf/ en

10.1007/s13358-013-0060-4 2013-09-22 sjp

The fossil record of Glypturus (Decapoda: Axiidea: Callianassidae) revisited with additional observations and description of a new species Hyžný,Matúš Bahrami,Ali Klompmaker,Adiël Yazdi,Mehdi Toomey,James Neumann,Christian Decapoda Axiidea Callianassidae Glypturus Eocene Miocene New species Swiss Journal of Palaeontology 132(2): 129-139 The extent of propodal tuberculation is considered taxonomically important for species of the callianassid genus Glypturus (Decapoda: Axiidea). Based on cheliped material from the Middle-Late Miocene of Iran, Glypturuspersicus n. sp. is described here. It possesses no tuberculation on the outer surface of the major propodus, whereas its inner surface is moderately to heavily tuberculated in terms of its extent. It resembles extant Glypturus armatus, but this species is completely smooth on both propodal surfaces. A reappraisal of Glypturus toulai from the Early and Late Miocene of Panama is presented. Additionally, the type material of Glypturus fraasi from the Late Eocene of Egypt is figured. In the nature of tuberculation, an evolutionary trend is observable in Glypturus with the most tuberculated forms from the Palaeogene and less tuberculated forms from the Neogene. This trend is clearly seen in the possible West Atlantic lineage of the genus. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0060-4 https://doi.org/10.1007/s13358-013-0060-4 https://sjp.pensoft.net/article/35093/ https://sjp.pensoft.net/article/35093/download/pdf/ en

10.1007/s13358-013-0061-3 2013-09-25 sjp

Origin and radiation of the comatulids (Crinoidea) in the Jurassic Hess,Hans Comatulids Paracomatulids Phylogeny Taxonomy Swiss Journal of Palaeontology 133(1): 23-34 The early history of the comatulids is discussed based on recently described Jurassic specimens. Their centrodorsals suggest that the Order Comatulida is a monophyletic, synapomorphic clade that originated with Palaeocomaster from stem group pentacrinitids and not from a paracomatulid ancestor. A pentacrinitid is also considered ancestor to Paracomatula. As a result Paracomatulidae are classified with Pentacrinitina, making Paracomatuloidea redundant as a suborder of Comatulida. Palaeocomaster paucicirrus n. sp. from the Toarcian/Aalenian of Quedlinburg, northern Germany, and Palaeocomaster benthuyi n. sp. from the Pliensbachian of Sedan, France, are described as new. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0061-3 https://doi.org/10.1007/s13358-013-0061-3 https://sjp.pensoft.net/article/35099/ https://sjp.pensoft.net/article/35099/download/pdf/ en

10.1007/s13358-013-0056-0 2013-11-14 sjp

New and revised occurrences of Dihoplus megarhinus (Mammalia, Rhinocerotidae) in the Pliocene of Italy Pandolfi,Luca Rhinocerotidae Dihoplus Stephanorhinus Pliocene Italy Swiss Journal of Palaeontology 132(2): 239-255 Several rhinoceros remains, collected in the Pliocene deposits of Northern Italy and usually ascribed to Dicerorhinus or Rhinocerosmegarhinus, are revised; furthermore, unpublished Pliocene remains are also described. The material is compared with the respective anatomical elements of Dihoplus megarhinus, Stephanorhinus jeanvireti and Stephanorhinus etruscus. Based on morphological and morphometrical comparisons, the presence of Dihoplus megarhinus is confirmed in at least ten sites. In other Late Pliocene fossiliferous localities, the presence of S. jeanvireti and/or S. etruscus is recorded. D. megarhinus occurred in Italy at the beginning of the Early Pliocene. It was well represented in Val di Pugna (Tuscany) and in several Pliocene marine deposits near Bologna by fragmentary mandibles, some postcranial remains and few teeth. The species disappeared before the beginning of the Villafranchian (Late Pliocene) when S. jeanvireti and S. etruscus co-occurred both in the site of Villafranca d’Asti and Montopoli. S. jeanvireti disappeared in Italy at the Pliocene-Early Pleistocene transition whereas S. etruscus was widespread in Central and Southern Italy. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2013 Research Article text/html info:doi:10.1007/s13358-013-0056-0 https://doi.org/10.1007/s13358-013-0056-0 https://sjp.pensoft.net/article/35097/ https://sjp.pensoft.net/article/35097/download/pdf/ en

10.1007/s13358-014-0065-7 2014-05-10 sjp

Pleistocene scleractinian corals from Marsa Alam area, Red Sea Coast, Egypt: systematics and biogeography Kora,Mahmoud Ayyad,Salah El-Desouky,Heba Scleractinian corals Red Sea Pleistocene Palaeogeography Egypt Swiss Journal of Palaeontology 133(1): 77-97 Coral reef terraces are investigated in five localities around Marsa Alam on the Egyptian Red Sea Coast. The reefal limestones and the alternating terrigenous clastics are assigned to the Pleistocene Samadai Formation. Sixty-one scleractinian coral species belonging to 25 genera and 10 families were identified. Thirteen scleractinian species, for the first time recorded from the Egyptian Red Sea coastal plain, are systematically studied. The stratigraphic distribution of these fossils is illustrated and discussed. Six species are extended to the Miocene and five other species are recorded from the Pliocene and still living in the present Red Sea and the Indo-Pacific. The geographic distributions of the identified coral species are illustrated on maps. These maps show that, all the identified coral species are distributed only throughout the Indo-Pacific realm, increasing from the central part westwards across the Indian Ocean to the Red Sea. There are four species that are restricted to the Red Sea, Arabian region and West Indian Ocean. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2014 Research Article text/html info:doi:10.1007/s13358-014-0065-7 https://doi.org/10.1007/s13358-014-0065-7 https://sjp.pensoft.net/article/35106/ https://sjp.pensoft.net/article/35106/download/pdf/ en

10.1007/s13358-014-0063-9 2014-05-27 sjp

An exceptionally well-preserved skeleton of Palaeothentes from the Early Miocene of Patagonia, Argentina: new insights into the anatomy of extinct paucituberculatan marsupials Forasiepi,Analia Sánchez-Villagra,Marcelo Schmelzle,Thomas Ladevèze,Sandrine Kay,Richard Marsupialia Metatheria Cenozoic South America Skull Inner ear Postcranium Swiss Journal of Palaeontology 133(1): 1-21 During the Cenozoic paucituberculatans were much more diverse taxonomically and ecomorphologically than the three extant genera of shrew-like marsupials. Among paucituberculatans, palaeothentids were abundant during the Early Miocene, although most of the fossil remains consist of isolated teeth or fragmentary jaws. We describe a new and exceptional partial skeleton of Palaeothentes lemoinei (Palaeothentidae), collected from the Santa Cruz Formation (Santacrucian age, Early Miocene) in Patagonia. Whereas the skull of P. lemoinei has more plesiomorphic traits in the face, palate, and cranial vault than that of living paucituberculatans, the dental morphology is more derived. The osseous inner ear was examined using micro-CT scanning, revealing a cochlea with 1.9 turns, the presence of a “second crus commune”, an anterior semicircular canal (SC) projecting slightly dorsally from the dorsal-most point of the posterior SC, and lateral and posterior SCs projecting laterally to the same level. On the basis of postcranial anatomy, previous studies have demonstrated that P. lemoinei was an agile cursorial form, an inference supported by study of the new postcranial elements. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2014 Research Article text/html info:doi:10.1007/s13358-014-0063-9 https://doi.org/10.1007/s13358-014-0063-9 https://sjp.pensoft.net/article/35098/ https://sjp.pensoft.net/article/35098/download/pdf/ en

10.1007/s13358-014-0067-5 2014-07-12 sjp

Mammals of Sansan (Mammifères de Sansan) Becker,Damien Swiss Journal of Palaeontology 133(1): 119-120 info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2014 Research Article text/html info:doi:10.1007/s13358-014-0067-5 https://doi.org/10.1007/s13358-014-0067-5 https://sjp.pensoft.net/article/35109/ https://sjp.pensoft.net/article/35109/download/pdf/ en

10.1007/s13358-014-0066-6 2014-08-02 sjp

Erratum to: Neogene eastern Amazon carbonate platform and the paleoenvironmental interpretation Aguilera,Orangel F. Guimaraes,José Tasso Moraes-Santos,Heloisa Amazon Carbonate Pirabas Paleoenvironment Palynology Crustacea Swiss Journal of Palaeontology 133(1): 99-118 The Early Miocene Pirabas Formation represents extensive carbonate and siliciclastic belts deposited in marine coastal environments along the eastern Amazon coast. This formation was studied in its palynological, crustacean decapods and sedimentary facies, to develop a model of its depositional processes, faunal and floral assemblages and the sedimentary environments, as observed in the B17 mine (Capanema, Pará). The sedimentary records consist mostly of light gray to greenish gray mudstones with tidal bedding, calciferous sandstones, stratified biocalcirudites and levels with conglomerates deposited in a carbonate/siliciclastic transitional system with lagoon, tidal flat, flood-tide delta and foreshore environments. 18 palynomorph species were identified in the tidal flat deposits including one alga, five pteridophytes and nine angiosperms. Among the latter, mangrove pollen and spores of Zonocostites ramonae, Zonocostites minor and Deltoidospora adriennis are reported. Nine species of crustacean decapods were recognized in the foreshore deposits, comprising one Callianassoidae, two Calappidae and six Portunidae, represented by Euphylax, †Necronectes, Portunus and Scylla, the ecology of which is associated with beaches of marginal lagoons. The main factor in the formation of these carbonate environments is assumed to have been related to the lack of a large-scale drainage system such as the Amazon River basin in the transition Oligocene–Miocene, which may also have influenced carbonate production and resulted in a strong decrease of paleodischarges from incipient river systems along the Amazon coast. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2014 Erratum text/html info:doi:10.1007/s13358-014-0066-6 https://doi.org/10.1007/s13358-014-0066-6 https://sjp.pensoft.net/article/35107/ https://sjp.pensoft.net/article/35107/download/pdf/ en

10.1007/s13358-014-0064-8 2014-08-19 sjp

The crinoid Eugeniacrinites cariophilites from the Late Jurassic of southern Germany: babies, cripples and enigmatic wing plates Hess,Hans Cyrtocrinidae Lower Kimmeridgian Growth Predation Palaeoecology Phylogeny Swiss Journal of Palaeontology 133(2): 121-140 The material for the present paper is based on 50 kg of processed sediment from the Early Kimmeridgian of Geisingen. The most frequent crinoids comprise cups and brachials of the roveacrinid Saccocoma quenstedti while Crassicomafeifeli is represented by a few cups only; these remains are not described. Cups and primibrachials of Eugeniacrinitescariophilites are the commonest cyrtocrinids, while cups of Pilocrinus moussoni are rather rare and not further treated, as are columnals of the two species. The ontogenetic series of cups and axillary primibrachials of E.cariophilites starts from ossicles of about 0.5 mm in height; and growth is allometric in both types. Postlarval cups resemble phyllocrinids; the distinctive shape with lanceolate interradial extensions and wide articular facets appears at a later stage. The spearhead-shaped axillary primibrachials are synapomorphic. The youngest of these ossicles with a muscular facet proximally were able to form a flat roof over the radial cavity. First primibrachials with synostosial distal facet appeared at a slightly later stage with a width of 1 mm; growth is isometric. A significant number of cups are mutilated by bite marks. The predatory attacks were sublethal in most cases as shown by secondary stereom growth and regenerated facets. First primibrachials are not deformed, but deformations occur in a small number of second primibrachials. The results suggest that the predators, presumably fishes, targeted the soft parts in the cup. Enigmatic brachials with a large wing to one side and a facet to an arm are thought to belong to E. cariophilites and presumably attached to deformed cups; the wings may have been an antipredatory adaptation providing some shelter to the cup. The various antipredator morphologies in cyrtocrinid history are discussed. The presently available growth series of Eugeniacrinites invites discussion of early cyrtocrinid phylogeny. Eugeniacrinites seems to have been derived from Phyllocrinidae; and Sclerocrinidae with Cyrtocrinus as the first representative in the Middle Jurassic is thought to have originated from Early Jurassic Tetracrinidae such as Bilecicrinus. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2014 Research Article text/html info:doi:10.1007/s13358-014-0064-8 https://doi.org/10.1007/s13358-014-0064-8 https://sjp.pensoft.net/article/35112/ https://sjp.pensoft.net/article/35112/download/pdf/ en

10.1007/s13358-014-0068-4 2014-12-02 sjp

An assessment of age determination in fossil fish: the case of the opercula in the Mesozoic actinopterygian Saurichthys Scheyer,Torsten Schmid,Leonhard Furrer,Heinz Sánchez-Villagra,Marcelo Bone histology Opercle Sclerochronology Triassic Predatory fish Actinopterygii Swiss Journal of Palaeontology 133(2): 243-257 Analyzing and interpreting life history data (e.g., aging and longevity, age at sexual maturity) are fundamental in many paleontological studies. In the case of extant and fossil fishes, otoliths, and to a lesser degree other incrementally growing hard tissue structures such as scales and bones, have been utilized to reveal these data. We investigated the microanatomy and internal microstructure of opercula of Saurichthys, one of the most easily recognized and globally distributed fishes in the Triassic, to elucidate whether these prominent skull bones provide reliable age estimates. Opercula, and where the subopercula is present, of several outgroup taxa were sectioned to provide a phylogenetic framework for the study. The external protrusions and ridges or internal concentric bands or wrinkles are not related to internal age-related bone tissue structures such as annuli and growth zones, but are instead purely ornamental in the case of the former and probably structural/taphonomic in case of the latter. Opercular morphogenesis of Saurichthys opercula differs from that of the extant outgroups examined in that they show rostro-medial to caudo-lateral extending growth increments instead of ones that extend sub-parallel to the opercular bone surfaces. Individual age data could thus not be reliably extracted from those opercula. Furthermore, an odontode-like complex was not encountered in Saurichthys opercula, but a few specimens show a peculiar, weakly birefringent thin tissue layer of unknown origin filling the valleys between the external ornamental ridges. Although all Saurichthys opercula showed growth marks, these could not be counted to produce reliable individual age data, whereas bones with a more concentric cross section, such as the ceratohyal, appear better suited for this purpose. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2014 Research Article text/html info:doi:10.1007/s13358-014-0068-4 https://doi.org/10.1007/s13358-014-0068-4 https://sjp.pensoft.net/article/35119/ https://sjp.pensoft.net/article/35119/download/pdf/ en

10.1007/s13358-014-0069-3 2014-12-11 sjp

Western European middle Eocene to early Oligocene Chiroptera: systematics, phylogeny and palaeoecology based on new material from the Quercy (France) Maitre,Elodie Chiroptera Eocene Oligocene Western Europe Quercy karstic Lagerstätte Systematics Phylogeny Body mass Cenogram Grande Coupure Swiss Journal of Palaeontology 133(2): 141-242 Fossil material from 90 fossil localities, mostly paleokarstic, has been gathered together to study western European bat evolution and diversity from the middle Eocene (~44 Ma) to the early late Oligocene (~29 Ma). The morphological and biometric observations and comparisons of the tooth material allow recognition of 7 families, 10 genera and 57 species; amongst the latter, 45 are described in detail here together with 11 subspecies. Several taxa of various systematic ranks are described as new: 1 subgenus and 17 species including 6 new subspecies; 1 new family and 2 new genera were described in a previously published paper but originate from this large review. From these new results, and the long period covered (more than 10 Ma), this work suggests a number of phyletic hypotheses. Amongst others, the relationship between the new fossil family Mixopterygidae and the fossil and extant families Emballonuridae and Hipposideridae is discussed. The peculiar Necromantis fossil genus being now better documented, its particular inferior molar pattern is exemplified as defining the necromantodont pattern. Even though the affinities of Necromantis remain unclear, the new data indicate that the previous assignment to Megadermatidae was incorrect. Thanks to the available information from the bat material, the relative dating of yet unstudied and undated new localities is proposed from biochronal reference stages, characterized by some bat species with a given size and morphology. Also, further data are given for faunas dated by the numerical ages method. The comparison of fossil and modern bat cenograms suggests that the body weight composition of a community is linked to the nature of the environment in which it evolves. Finally, these analyses allow deducing some possible bat evolutionary modalities either by the variations in the represented weight range or by the proportion of the different weight categories. They indicate that extinctions preferentially affected “extreme species” from a morphological point of view, as well as in terms of body mass. Consequently, this allows discussion of the effect of Stehlin’s faunal Grande Coupure faunal event amongst western European bats at the Eocene–Oligocene boundary. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2014 Research Article text/html info:doi:10.1007/s13358-014-0069-3 https://doi.org/10.1007/s13358-014-0069-3 https://sjp.pensoft.net/article/35116/ https://sjp.pensoft.net/article/35116/download/pdf/ en

10.1007/s13358-015-0070-5 2015-02-18 sjp

Digital endocranial cast of Pampatherium humboldtii (Xenarthra, Cingulata) from the Late Pleistocene of Uruguay Sebastián Tambusso,P. Fariña,Richard Pleistocene Pampathere 3D reconstruction Endocast Encephalization quotient Swiss Journal of Palaeontology 134(1): 109-116 The diversity of the order Cingulata is much higher in the fossil record than that represented by the extant species. While pampatheres, one of its extinct groups, are superficially similar to armadillos, recent phylogenetic analysis grouped them with glyptodonts in the clade Glyptodonta. We describe here the first digital endocranial cast of a pampathere, Pampatherium humboldtii, from the Late Pleistocene of Uruguay and compare its morphology with that of glyptodonts and extant and fossil armadillos. Some of the characteristics observed are more similar to those of glyptodonts than to those seen in armadillos. The endocranial cast of Pampatherium has large pedunculate olfactory bulbs, a relative small cerebrum with only one cortical sulcus and a large cerebellum. Although all groups of cingulates, both extant and extinct, have a similar relative brain size, the relative brain size of pampatheres is larger than in glyptodonts and close to that of extant armadillos, The endocast morphology and the analysis of relative brain size of Pampatherium are congruent with their close affinity to glyptodonts and their inclusion in the clade Glyptodonta, although in a family of its own. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0070-5 https://doi.org/10.1007/s13358-015-0070-5 https://sjp.pensoft.net/article/35127/ https://sjp.pensoft.net/article/35127/download/pdf/ en

10.1007/s13358-015-0071-4 2015-04-04 sjp

Revised stratigraphy of Neogene strata in the Cocinetas Basin, La Guajira, Colombia Moreno,F. Hendy,A. Quiroz,L. Hoyos,N. Jones,D. Zapata,V. Zapata,S. Ballen,G. Cadena,E. Cárdenas,A. Carrillo-Briceño,J. Carrillo,J. Delgado-Sierra,D. Escobar,J. Martínez,J. Martínez,C. Montes,C. Moreno,J. Pérez,N. Sánchez,R. Suárez,C. Vallejo-Pareja,M. Jaramillo,C. Stratigraphy Paleontology Paleoenvironments GABI (Great American Biotic Interchange) Miocene Pliocene Cocinetas Basin La Guajira Peninsula Colombia Swiss Journal of Palaeontology 134(1): 5-43 The Cocinetas Basin of Colombia provides a valuable window into the geological and paleontological history of northern South America during the Neogene. Two major findings provide new insights into the Neogene history of this Cocinetas Basin: (1) a formal re-description of the Jimol and Castilletes formations, including a revised contact; and (2) the description of a new lithostratigraphic unit, the Ware Formation (Late Pliocene). We conducted extensive fieldwork to develop a basin-scale stratigraphy, made exhaustive paleontological collections, and performed 87Sr/86Sr geochronology to document the transition from the fully marine environment of the Jimol Formation (ca. 17.9–16.7 Ma) to the fluvio-deltaic environment of the Castilletes (ca. 16.7–14.2 Ma) and Ware (ca. 3.5–2.8 Ma) formations. We also describe evidence for short-term periodic changes in depositional environments in the Jimol and Castilletes formations. The marine invertebrate fauna of the Jimol and Castilletes formations are among the richest yet recorded from Colombia during the Neogene. The Castilletes and Ware formations have also yielded diverse and biogeographically significant fossil vertebrate assemblages. The revised lithostratigraphy and chronostratigraphy presented here provides the necessary background information to explore the complete evolutionary and biogeographic significance of the excellent fossil record of the Cocinetas Basin. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0071-4 https://doi.org/10.1007/s13358-015-0071-4 https://sjp.pensoft.net/article/35122/ https://sjp.pensoft.net/article/35122/download/pdf/ en

10.1007/s13358-015-0072-3 2015-04-08 sjp

Urchins on the edge: an echinoid fauna with a mixed environmental signal from the Eocene of Jamaica Van Den Ende,Conrad Donovan,Stephen Yellow Limestone Group Guys Hill Formation Systematics Palaeoecology Swiss Journal of Palaeontology 134(1): 129-142 An echinoid fauna from the Early–Middle Eocene of Jamaica has yielded six species of echinoid: the phymosomatoid Acanthechinus peloria (Arnold and Clark); the oligopygoid Oligopygus sp.; the clypeasteroids Fibularia jacksoni Hawkins and Neolaganum sp.; and the spatangoids Eupatagus alatus Arnold and Clark and Eupatagus sp. cf. E. clevei (Cotteau). Eupatagus alatus has a relatively low test, is broadest posterior of centre, and lacks an anterior sulcus; Eupatagus sp. cf. clevei is relatively higher and more inflated, more parallel-sided, and blunter anteriorly with an anterior sulcus. The discovery of F. jacksoni and Neolaganum sp. together with Oligopygus sp. is unexpected, as these species commonly have different ecological niches in the Eocene of Jamaica. In previous examples described from the Eocene succession of the island, oligopygoids favoured high-energy shelf edge settings, whereas Fibularia and neolaganids prefered low-energy lagoonal settings. The assemblage as a whole likely represents an Early–Mid Eocene echinoid fauna inhabiting a shallow island shelf sea, in a transition between shelf edge and lagoonal setting. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0072-3 https://doi.org/10.1007/s13358-015-0072-3 https://sjp.pensoft.net/article/35134/ https://sjp.pensoft.net/article/35134/download/pdf/ en

10.1007/s13358-015-0073-2 2015-04-11 sjp

Re-examination of the upper Miocene freshwater fish fauna from Höwenegg (Hegau, Germany) Gaudant,Jean Teleosts Cyprinids Silurids Palaeoenvironment Miocene Germany Swiss Journal of Palaeontology 134(1): 117-127 The fish fauna from the volcano-detritic sediments of Höwenegg has been known for more than half a century, when Tobien reported that cyprinid fishes are present at the site. Four years later, Jörg identified three genera: Leuciscus, Tinca and a catfish that he expected to describe. However, Jörg died in 1977 without having written the paper, although he had figured the catfish, which is the oldest one preserved as an articulated skeleton in the European Miocene, and a cyprinid: Leuciscus sp. The purpose of the present paper is to provide a better knowledge of these fishes and of their relationships; a new species, Silurus joergi, is created for the silurid. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0073-2 https://doi.org/10.1007/s13358-015-0073-2 https://sjp.pensoft.net/article/35129/ https://sjp.pensoft.net/article/35129/download/pdf/ en

10.1007/s13358-015-0077-y 2015-05-17 sjp

Comment on “Urchins on the edge: an echinoid fauna with a mixed environmental signal from the Eocene of Jamaica” by C. van den Ende and S. K. Donovan [Swiss J. Palaeontol. DOI 10.1007/s13358-015-0072-3] Mitchell,Simon Echinoids Eocene Chapelton Formation Guys Hill Formation Jamaica Swiss Journal of Palaeontology 134(1): 143-144 van den Ende and Donovan (2015: “Urchins on the edge: an echinoid fauna with a mixed environmental signal from the Eocene of Jamaica” Swiss J. Palaeontol. doi:10.1007/s13358-015-0072-3) describe an interesting echinoid fauna from the Guys Hill Formation of Thornton, Jamaica. Based on geological mapping, this fauna should be assigned to the Chapelton Formation and not the Guys Hill Formation. A brief review of echinoids from the Chapelton Formation, including two localities in central Jamaica indicates that geographically distinct shelf edge and lagoonal assemblages are not present. Instead, the echinoids are better interpreted as open marine and restricted marine, and their distribution explained by a large-scale transgressive–regressive cycle with a ramp-type geometry. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0077-y https://doi.org/10.1007/s13358-015-0077-y https://sjp.pensoft.net/article/35135/ https://sjp.pensoft.net/article/35135/download/pdf/ en

10.1007/s13358-015-0076-z 2015-05-20 sjp

Roveacrinids (Crinoidea) from the mid-Cretaceous of Texas: ontogeny, phylogeny, functional morphology and lifestyle Hess,Hans Roveacrinida Albian Cenomanian Texas Triassic China Swiss Journal of Palaeontology 134(1): 77-107 New material of known roveacrinids from two Cretaceous sites in Texas is described. Upper Albian strata at Saginaw Quarry furnished rich material of Poecilocrinus latealatus and Roveacrinus pyramidalis; for these two forms cups can be combined with primibrachials and secundibrachials. Some cups of Orthogonocrinus apertus are also present. Juvenile cups of these three species demonstrate ontogenetic changes, which are most prominent in P. latealatus. At the adult stage this species has cups with dish-like lateral wings; the first primibrachials have an aboral bowl; axillary second primibrachials and proximal secundibrachials have a wide aboral bowl; and distal brachials carry spines. The arms lack pinnules. A pelagic lifestyle with a mouth-up position is assumed. In contrast, R. pyramidalis has rod-shaped or stick-like brachials without wings, and food grooves are lacking. The less rich lower Cenomanian strata at the Dottie Lynn site provided a number of cups and brachials of Roveacrinus spinosus. In addition, cups of R. peracutus and R. alatus are present. Styracocrinus Peck is considered synonymous with Roveacrinus Douglas. The double cavity in the cups of the various species is discussed; its proposed function as a hydrostatic organ seems conjectural. Two genera of Saccocominae of the Late Jurassic radiation are thought to be ancestors to similar genera of Roveacrinidae first appearing during the Albian radiation. Derivation of Poecilocrinus may be from Saccocoma, Discocrinus and Plotocrinus possibly from Crassicoma. The ancestry of species of Roveacrinus and Orthogonocrinus with conical cups and two distinct body chambers is unclear. The closely similar juvenile cups of Roveacrinus pyramidalis and Poecilocrinus latealatus suggest a common origin despite the widely diverging arm structure. A comparison of Roveacrinus pyramidalis with the Triassic somphocrinid Osteocrinus reveals similar rod-shaped, smooth and tall brachials lacking a distinct food groove. Based on their mass occurrence and wide distribution, species of Osteocrinus species are thought to have been pelagic. This is substantiated by the presence of cups and rod-shaped brachials in Ladinian black shales of southern China. While food of species of Poecilocrinus presumably consisted of coccolithophores and planktonic foraminifera, collection and transport of food particles by Roveacrinuspyramidalis is enigmatic, as is that of Osteocrinus. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0076-z https://doi.org/10.1007/s13358-015-0076-z https://sjp.pensoft.net/article/35125/ https://sjp.pensoft.net/article/35125/download/pdf/ en

10.1007/s13358-015-0078-x 2015-05-28 sjp

Abrupt changes in distance between succeeding septa at the hatching time in modern coleoids Sepiella japonica and Spirula spirula Yamaguchi,Ayaka Kumada,Yuichiro Alfaro,Andrea Wani,Ryoji Septa Hatching Ontogenetic change Sepiella japonica Spirula spirula Swiss Journal of Palaeontology 134(2): 301-307 Analyses of distances between succeeding septa throughout ontogeny of modern coleoids Sepiella japonica and Spirula spirula reveal that the first several septa (until ca. 6th–8th septa in Sepiella japonica and until ca. 2nd–3rd septa in Spirula spirula) have relatively larger septal distances than the following septa and then the distances between succeeding septa abruptly decrease at the time of hatching for both species, which are known from previous rearing observations and stable isotopic analyses. If this relationship holds in fossil cephalopods preserving internal shells, their paleo-hatching timings could be reconstructed through the ontogenetic analyses of their septal distances. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0078-x https://doi.org/10.1007/s13358-015-0078-x https://sjp.pensoft.net/article/35157/ https://sjp.pensoft.net/article/35157/download/pdf/ en

10.1007/s13358-015-0075-0 2015-05-29 sjp

Preface: La Guajira, Colombia: a new window into the Cenozoic neotropical biodiversity and the Great American Biotic Interchange Jaramillo,C. Moreno,F. Hendy,A. Sánchez-Villagra,Marcelo Marty,Daniel La Guajira Neogene Neotropics Paleontology Great American Biotic Interchange (GABI) Swiss Journal of Palaeontology 134(1): 1-4 Over the past four years, we have conducted extensive fieldwork in the Cocinetas Basin of La Guajira Peninsula, including geological mapping, stratigraphic descriptions, and exhaustive paleontological collection of plants, microfossils, and marine and terrestrial invertebrates and vertebrates. Moreno et al. (Swiss J Paleontol 134: 1–39, 2015) provide an overview of these efforts, including a revised Neogene stratigraphy for Cocinetas Basin and redefined (Jimol and Castilletes formations) and newly named (Ware Formation) lithostratigraphic units. Hendy et al. (Swiss J Paleontol 134, 2015) utilize the extensive invertebrate fossil record of the basin to develop paleoenvironmental interpretations and a chronostratigraphic framework buttressed by 87Sr/86Sr isotopic analyses and biostratigraphy. This geological exploration highlights the tremendously diverse and important fossil assemblages throughout the Jimol, Castilletes and Ware formations. These new fossil data will be of great value for future paleobiogeographic, paleogeographic, paleooceanographic and paleoenvironmental interpretations. Already, the faunal and floral fossil record of Cocinetas Basin indicates that once the humid ecosystem of the Neogene underwent drastic climatic changes over the last two million years. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0075-0 https://doi.org/10.1007/s13358-015-0075-0 https://sjp.pensoft.net/article/35120/ https://sjp.pensoft.net/article/35120/download/pdf/ en

10.1007/s13358-015-0074-1 2015-06-09 sjp

Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, Colombia Hendy,Austin Jones,Douglas Moreno,Federico Zapata,Vladimir Jaramillo,Carlos Jimol Formation Castilletes Formation Ware Formation Mollusca Guajira Peninsula Colombia Swiss Journal of Palaeontology 134(1): 45-75 The Neogene sedimentary fill of the Cocinetas Basin in northern Colombia preserves a rich record of marine invertebrates and can be analyzed in the context of a high-resolution stratigraphy and excellent chronostratigraphy. Molluscan fossils are highly diverse and often well preserved, offering a window into the rapidly changing paleoenvironments and biogeography of northern South America during parts of the Early to Middle Miocene and latest Pliocene to Pleistocene. Before the evolutionary and biogeographic implications of these fossils can be understood, however, their associated depositional environments and geologic ages must be determined. Here, we present preliminary results from paleoenvironmental, biostratigraphic, and strontium isotope chronostratigraphic analyses of sediments and fossils from the Uitpa, Jimol, Castilletes, and Ware formations found in Cocinetas Basin. The basal unit in the Neogene succession, the Uitpa Formation, comprises mudstones redeposited sandstones and molluscs typical of bathyal to outer shelf environments at its base. It is a shallowing-up sequence and is conformable with the overlying Jimol Formation, which comprises coarse-grained lithic calcarenite, coquina, and mudstone that represent a regressive–transgressive–regressive sequence. This sequence includes foreshore and transition zone through lower inner shelf environments, but generally poorly preserved invertebrate assemblages. The conformably overlying Castilletes Formation contains a varied suite of depositional environments with better-developed shell beds and thicker successions of intervening siltstone. A significant unconformity exists between the Castilletes Formation and the overlying Ware Formation, which represents a deltaic to coastal shoreface deposition environment, rich in shallow marine molluscs from a variety of ecotopes. Biostratigraphic assessment and strontium isotopic results from the Jimol and Castilletes formations indicate that these units contain fossils of latest Early Miocene through Middle Miocene age, while those of the Ware are approximately Late Pliocene in age. These results help to place the shallow marine assemblages of Cocinetas Basin into a wider geologic context that aids our understanding of how these faunas relate to the broader evolutionary and biogeographic history of the southern Caribbean during the Neogene. Additionally, the isotope dating and paleoecology of this fauna help to place co-occurring terrestrial and aquatic vertebrate assemblages into a local paleoenvironmental and chronostratigraphic framework. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0074-1 https://doi.org/10.1007/s13358-015-0074-1 https://sjp.pensoft.net/article/35123/ https://sjp.pensoft.net/article/35123/download/pdf/ en

10.1007/s13358-015-0083-0 2015-06-10 sjp

Non-invasive imaging techniques combined with morphometry: a case study from Spirula Hoffmann,René Reinhoff,Daniel Lemanis,Robert Computed tomography Species description Cephalopod shells 2D and 3D Conch features Swiss Journal of Palaeontology 134(2): 207-216 Spirula spirula is a unique deep-sea squid with unknown taxonomic status. Precise description of shell morphology may help to decide whether the genus contains one or more species. Here, a straight forward description of ontogenetic changes of shell parameters is presented for a single shell of Spirula spirula. Using micro-computed tomography, surface and volumetric data, e.g., chamber volumes and surface areas, as well as siphuncle volumes and surface areas were collected and used for the description. Advantage of the method, combining non-invasive imaging techniques with classical morphometry, is discussed. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0083-0 https://doi.org/10.1007/s13358-015-0083-0 https://sjp.pensoft.net/article/35148/ https://sjp.pensoft.net/article/35148/download/pdf/ en

10.1007/s13358-015-0079-9 2015-06-10 sjp

Reply to comment on “Urchins on the edge: an echinoid fauna with a mixed environmental signal from the Eocene of Jamaica” by C. van den Ende and S. K. Donovan Donovan,Stephen Van Den Ende,Conrad Charles Alfred Matley Charles Taylor Trechmann Yellow Limestone Group Palaeoecology Palaeogeography Swiss Journal of Palaeontology 134(1): 145-147 In the latest of a series of comments on Donovan’s research papers on the geology of Jamaica, Mitchell disagrees with van den Ende and Donovan’s lithostratigraphic assignment of the Thornton echinoid site, and the model used for interpreting the palaeogeography and palaeoecology of the Yellow Limestone Group. The first point is considered trivial; the Guys Hill Member was formerly included within the Chapelton Formation, and both are in the Yellow Limestone Group (mid-Lower to mid-Middle Eocene). Mitchell’s hitherto unpublished data provides supporting evidence for the determination of Miller and Donovan, made almost 20 years ago, and reconsidered by van den Ende and Donovan, that clypeasteroids and oligopygoids rarely occur together in the Yellow Limestone Group. We consider the sequence stratigraphic interpretation of the Yellow Limestone Group to deserve further examination. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0079-9 https://doi.org/10.1007/s13358-015-0079-9 https://sjp.pensoft.net/article/35136/ https://sjp.pensoft.net/article/35136/download/pdf/ en

10.1007/s13358-015-0080-3 2015-06-30 sjp

Statoliths from the Jurassic succession of south-west England, United Kingdom Hart,Malcolm Clarke,Malcolm De Jonghe,Alex Price,Gregory Page,Kevin Smart,Christopher Statoliths Jurassic Teuthids Otoliths United Kingdom Swiss Journal of Palaeontology 134(2): 199-205 The occurrence of statoliths within the Jurassic succession of south-west England and other parts of Europe is reviewed. Five ‘morphospecies’ have been identified, ranging in age from Hettangian to Kimmeridgian. With so little published information on statoliths, the presently known geological record is incomplete, although new occurrences are continually being discovered. The occurrence of statoliths, in the absence of soft-bodied fossils, may ultimately provide a more complete indication of the distribution of the soft-bodied host animals. At the present time, however, only one of the statolith ‘morphospecies’ can be, tentatively, linked to a known species of teuthid. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0080-3 https://doi.org/10.1007/s13358-015-0080-3 https://sjp.pensoft.net/article/35146/ https://sjp.pensoft.net/article/35146/download/pdf/ en

10.1007/s13358-015-0081-2 2015-07-21 sjp

Nomenclatural review of Polyptychoceras and 18 related taxa (Ammonoidea: Diplomoceratidae) Ikuno,Kenji Hirano,Hiromichi Heteromorph ammonites Late Cretaceous Nomenclature Swiss Journal of Palaeontology 134(2): 227-232 The nomenclature of Polyptychoceras, a Late Cretaceous heteromorph ammonite genus, and 18 related taxa is examined with a view to clarifying their nomenclatural availability, authors, dates of publication, and name-bearing types, on the basis of the International Code of Zoological Nomenclature (Fourth Edition). It is concluded that one family-group name, four genus-group names, and 12 species-group names are currently available. In contrast, the names Po. subundatum and Po. jimboi are unavailable. We also showed that Po. yubarense had been established by Shimizu (J Shanghai Sci Inst, Sect II, 1(11):159–226, 1935a). info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0081-2 https://doi.org/10.1007/s13358-015-0081-2 https://sjp.pensoft.net/article/35150/ https://sjp.pensoft.net/article/35150/download/pdf/ en

10.1007/s13358-015-0082-1 2015-07-21 sjp

Soft-tissue preservation in the Middle Jurassic ammonite Cadoceras from Central Russia Mironenko,Alexandr Ammonoids Middle Jurassic Soft tissues Cadoceras Russia Swiss Journal of Palaeontology 134(2): 281-287 The findings of fossilized ammonite soft tissues are extremely rare, so each specimen may be important for understanding the anatomy of these cephalopods. This paper deals with soft tissue fragments and imprints preserved in the rear part of the body chamber of the Middle Jurassic ammonite Cadoceras stupachenkoi from Central Russia. At the base of the body chamber of this ammonite in front of the last septum, a mantle fragment with clearly visible longitudinal fibers and imprints of the palliovisceral ligament are preserved. In front and slightly to the side of the mantle fragment, a small area with branched structures is located; probably, these structures are fragments of gills. In general, the structure of the soft tissues in the rear part of the ammonite body looks very similar to that of modern nautilids, with one exception: mantle fibers are not directed forward as observed in Nautilus, but to the mid-ventral line, probably to the ventral muscle. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0082-1 https://doi.org/10.1007/s13358-015-0082-1 https://sjp.pensoft.net/article/35155/ https://sjp.pensoft.net/article/35155/download/pdf/ en

10.1007/s13358-015-0091-0 2015-07-22 sjp

Early ideas about fossil cephalopods Etter,Walter History of palaeontology Ammonites Belemnites Living analogue Extinction Swiss Journal of Palaeontology 134(2): 177-186 Ammonites and belemnites are among the most celebrated invertebrate fossils, and both groups played a crucial role in the early history of palaeontology. This article gives an overview of the sometimes twisted roads that led from the first descriptions and illustrations of ammonites and belemnites in the 16th century to the picture that emerged in the early 19th century. The pearly Nautilus served as modern analogue for ammonites since the late 17th century, and the organic nature of the ammonites and their kinship to Nautilus became established shortly thereafter. For belemnites, the lack of a suitable modern analogue led to a much longer phase of speculation in which belemnites were assigned to many different groups of organisms, or even to the inorganic/mineralogic world. The apparent lack of both groups in today’s seas led to various explanations including migration into the deep-sea. For ammonites, however, transmutation into the tiny foraminifers seemed at one time a likely explanation. Extinction only became widely accepted after the protozoan nature of the foraminifers was established, and the great deep-sea expeditions failed to recover ammonites or belemnites. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0091-0 https://doi.org/10.1007/s13358-015-0091-0 https://sjp.pensoft.net/article/35143/ https://sjp.pensoft.net/article/35143/download/pdf/ en

10.1007/s13358-015-0089-7 2015-07-22 sjp

Fluctuations of the oxygen minimum zone at the end of Oceanic Anoxic Event 2 in the Gulf of Mexico and the response of ammonites Ifrim,Christina OMZ fluctuation Faunal change Ammonites Turonian Mexico Cretaceous Swiss Journal of Palaeontology 134(2): 217-225 The latest Cenomanian to basal middle Turonian (Late Cretaceous) section at Vallecillo, Mexico, contains a continuous and highly fossiliferous sedimentary record. It preserves a detailed insight into a pelagic ecosystem that recovered from Oceanic Anoxic Event (OAE) 2. The deposit formed during this period under the influence of an expanded, but fluctuating oxygen minimum zone, which also affected the fauna. In this section, the abundances of ammonites do not correlate with those of inoceramids; they not only rule out a preservational bias but also indicate that ammonites and their hatchlings populated shallower water depths than inoceramid larvae and planktic foraminifers, contrasting previous models. The most abundant species at Vallecillo, Pseudaspidoceras flexuosum, shows a response to these environmental changes. Pseudaspidoceras flexuosum clearly inhabited the open water column. It is among the first to reappear at the end of OAE 2 and may have been adapted to the layered water body. The improving conditions during the early Turonian led to a migration of P. flexuosum into other seas and oceans. Phases of a contracted OMZ are phases of immigration and changes in the ammonite faunas at Vallecillo, whereas phases of an expanded OMZ are phases of stagnation. Although the abundance of ammonites is independent of fluctuations of the OMZ, their dispersal and migration are related to them. This study is an example for the complexity of species-based analyses. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0089-7 https://doi.org/10.1007/s13358-015-0089-7 https://sjp.pensoft.net/article/35149/ https://sjp.pensoft.net/article/35149/download/pdf/ en

10.1007/s13358-015-0084-z 2015-07-22 sjp

3-D orientation and distribution of ammonites in a concretion from the Upper Cretaceous Pierre Shale of Montana Landman,Neil Grier,Joyce Grier,James Cochran,J. Klofak,Susan Ammonites Cretaceous Taphonomy Pierre Shale Concretion Swiss Journal of Palaeontology 134(2): 257-279 One of the most common modes of preservation of ammonites in the Upper Cretaceous US Western Interior is in concretions. We examine an accumulation of ammonites from a single concretion in the lower Maastrichtian Pierre Shale of eastern Montana. The concretion is an oblate spheroid 50 cm in length and 26 cm in diameter, with its long axis parallel to the substrate. It contains approximately 90 ammonite specimens representing three species of Hoploscaphites including adults and juveniles. The concretion also contains other fauna, primarily bivalves and gastropods. A total of 33 ammonites, mostly adults, are concentrated in a cluster that spans 71 % of the length of the concretion (called the “sculpture”). 3-D measurements of the ammonites in the sculpture reveal that (1) the shells dip at all angles, with a significant trend toward more horizontal from west to east; (2) the shells dip with a highly significant bias toward the east, suggesting a current from that direction; and (3) a highly significant number of the shells that are non-vertical face with their left side up. Most of the shells show lethal damage as indicated by missing pieces of body chamber. After settling to the bottom, the shells may have piled up against each other, creating a sediment trap. Other organisms such as scavenging gastropods may have been attracted to the site to feed on the stranded ammonite carcasses. The chambers of the ammonite phragmocones and even some of the body chambers are empty, suggesting relatively rapid burial. Oxygen and carbon isotopic analyses of the ammonite shells reveal that they preserve their original isotopic signature. The values of δ13C of the carbonate cement in the concretionary matrix are much lighter than those in the ammonite shells and imply that cementation of the concretion occurred in association with the decomposition of organic matter. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0084-z https://doi.org/10.1007/s13358-015-0084-z https://sjp.pensoft.net/article/35154/ https://sjp.pensoft.net/article/35154/download/pdf/ en

10.1007/s13358-015-0087-9 2015-07-24 sjp

Geochemical evidence (C and Sr isotopes) for methane seeps as ammonite habitats in the Late Cretaceous (Campanian) Western Interior Seaway Cochran,J. Landman,Neil Larson,Neal Meehan,Kimberly Garb,Matthew Brezina,Jamie Carbon Strontium Isotopes Ammonites Cretaceous Methane seeps Swiss Journal of Palaeontology 134(2): 153-165 Methane seeps in the Upper Cretaceous Pierre Shale of the U.S. Western interior contain a rich fauna including ammonites (Baculites, Hoploscaphites, Didymoceras, Placenticeras, Solenoceras), bivalves (Lucina), gastropods, sponges, and crinoids. Occasionally, the shell material in the seeps is very well preserved, retaining the original mineralogy and microstructure. We explored two such seeps from the upper Campanian Didymoceras cheyennense and overlying Baculites compressus Zones (74.7–73.5 Ma) in southwestern South Dakota. Light values of δ13C in the micritic limestones (–11 to –47 ‰) confirm the impact of anaerobic oxidation of methane on the isotopic composition of the dissolved inorganic carbon reservoir. At the seep from the D. cheyennense Zone, δ13C values in well-preserved specimens of Hoploscaphites and Baculites are significantly lighter than those measured in specimens from approximately age-equivalent non-seep deposits. In addition, the 87Sr/86Sr ratio is elevated in the authigenic carbonates and ammonite shells compared with the coeval marine value. This suggests that seep fluids imprinted with a radiogenic Sr signature, perhaps derived from isotopic exchange with granitic deposits at depth associated with the Black Hills uplift, are transported through the surficial sediments into the overlying water. The persistence of these isotopic tracers of seep fluids in the ammonite shells suggests that these mobile animals were likely demersal and were living in close proximity to the seep. A more restricted data set on a single baculite and nautilid from the seep in the B. compressus Zone shows less divergence of δ13C and 87Sr/86Sr relative to non-seep values, suggesting that fluid transport was not as strong at that seep. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0087-9 https://doi.org/10.1007/s13358-015-0087-9 https://sjp.pensoft.net/article/35140/ https://sjp.pensoft.net/article/35140/download/pdf/ en

10.1007/s13358-015-0085-y 2015-07-24 sjp

Siphonal zone structure in the cuttlebone of Sepia officinalis Doguzhaeva,Larisa Dunca,Elena Sepia Cuttlebone Siphonal zone Connecting stripes Contacting ridges Lamella–fibrillar nacre Swiss Journal of Palaeontology 134(2): 167-176 The evolutionary process through which the siphonal zone of the cuttlebone of Sepia replaced the tubular siphuncle seen in other shelled cephalopods is poorly understood. Recently, porous connecting stripes, interpreted as homologous to connecting rings of tubular siphuncles, were revealed in Sepia (Acanthosepion) cf. savignyi (Geobios, 45:13–17, 2012). New data on the siphonal zone structure are herein demonstrated through SEM testing of 16 beach-collected cuttlebones of Sepia officinalis from Vale do Lobo, southern Portugal. In examined cuttlebones, the organic connecting stripes are mineralized along their peripheries where they are attached to septa by inorganic–organic porous contacting ridges. The contacting ridges consist of globular crystalline units within an organic matrix; each globule is a stack of rounded alternating organic and mineralized microlaminas parallel to the septal surface; mineralized microlaminas contain carbonate microgranules. Porous connecting stripes together with the contacting ridges may serve as transport routes for the cameral liquid used in buoyancy regulation. The contacting ridges appear to reinforce contacts between the connecting stripes and septa, and may strengthen shell resistance to changing environments. Lamella–fibrillar nacre in septa is demonstrated in Sepia for the first time. Comparison of Sepia and Spirula reveals the common character of their phragmocones, the slit-like shape of the permeable zones between chambers and the siphuncle. Narrowing of the permeable zones may provide shell resistance to high hydrostatic pressure; however, the essentially dissimilar relative length of the permeable zones may results in different capabilities of two genera for buoyancy regulation. In Sepia, long narrow porous inorganic–organic permeable connecting stripes and contacting ridges may allow for rapid buoyancy regulation which would lead to environmental plasticity and higher species diversity. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0085-y https://doi.org/10.1007/s13358-015-0085-y https://sjp.pensoft.net/article/35141/ https://sjp.pensoft.net/article/35141/download/pdf/ en

10.1007/s13358-015-0086-x 2015-07-31 sjp

Lissajousibelus nov. gen., an Early Jurassic canaliculate belemnite from Normandy, France Weis,Robert Dzyuba,Oksana Mariotti,Nino Chesnier,Marc Systematics Belemnitida Belemnopseina Toarcian Anglo-Paris Basin Calvados Swiss Journal of Palaeontology 134(2): 289-300 Belemnites harleyi Mayer, 1866, originally described from the Jurassic of Normandy, has encountered diverging interpretations during the last 150 years of scientific research. It has subsequently been assigned to four different genera (Belemnopsis, Aulacoteuthis, Acrocoelites and Holcobelus). The detailed study of the rostrum morphology and its inner structure allows us to attribute it to a new genus, Lissajousibelus Weis gen. nov., in honour of the French geologist Marcel Lissajous (1863–1921). Key features of the new genus are the overall depressed rostrum, short dorsolateral apical grooves, a long intermediate ventral groove with splitting surface, and a shallow dorsoalveolar depression. Bed-by-bed sampling at the classic locality Feuguerolles-sur-Orne (Calvados) enables us to revise the stratigraphic position of Lissajousibelus harleyi (Mayer, in J de Conchyl 3:358–369, 1866) as lowermost Toarcian Tenuicostatum Chronozone. Lissajousibelus Weis gen. nov. is therefore amongst the earliest belemnites with belemnopseine morphology. However, its phylogenetic relationships with younger Belemnopseina from the Aalenian–Bajocian (Middle Jurassic) remain unclear. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0086-x https://doi.org/10.1007/s13358-015-0086-x https://sjp.pensoft.net/article/35156/ https://sjp.pensoft.net/article/35156/download/pdf/ en

10.1007/s13358-015-0088-8 2015-08-05 sjp

New size data on the enigmatic Spirula spirula (Decabrachia, suborder Spirulina), on a global geographic scale Lukeneder,Alexander Cephalopods Deep-water squid Spirula spirula Size classes Oceanic distribution Swiss Journal of Palaeontology 135(1): 87-99 The ram’s horn squid Spirula spirula is a unique deep-water marine organism whose life cycle remains enigmatic. Interpretations of its ecology and habitat preferences are currently based solely on dredging, on fishery data, stable isotope data and rare molecular genetic analyses of dead specimens. These methods form the basis to decipher phylogeographic questions of otherwise unobservable deep-sea animals such as S. spirula. Here, new morphological data from internal shells (specimens n = 408, analysed n = 260) are presented from 12 different populations over huge distances, from the Atlantic, Indian and the Pacific Oceans. A monospecific status is assumed for Spirula, with its species S. spirula. The dataset shows a highly variable shell morphology including size distribution within distinct populations. Populations from the Indian Ocean are larger than those from the Atlantic and the Pacific. Specimens from the northern Indian Ocean (Maldives, Sri Lanka, Thailand) are larger than specimens from the eastern Indian Ocean (Mauritius, Tanzania) and the south-eastern Indian Ocean (western Australia). Specimens from the eastern Atlantic (Canary Islands) are smaller than those of the western Atlantic (Brazil, Tobago). The Canary Islands yielded by far the smallest specimens, while the largest specimen comes from Thailand. Specimens from the locality at eastern Australia (south-west Pacific) have an intermediate size range. Morphologic and geographic data suggest a geographically induced size differentiation within S. spirula. Preliminary findings on conchs mirror the known (from soft parts) existence of two sexual dimorphs in Spirula. The next step would be to collect more material from other localities. A more detailed morphometric approach based on specimens from which the sexes are known is required to enable a detection of the presence of sexual dimorphism by morphometric analyses on internal shells of Spirula. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0088-8 https://doi.org/10.1007/s13358-015-0088-8 https://sjp.pensoft.net/article/35168/ https://sjp.pensoft.net/article/35168/download/pdf/ en

10.1007/s13358-015-0090-1 2015-09-04 sjp

Mid-Carboniferous ammonoids from the Shannon Basin, western Ireland: identification of crushed material Lacchia,Anthea Sevastopulo,George Graham,John Ammonoidea Carboniferous Serpukhovian Bashkirian Taxonomy Shannon Basin Swiss Journal of Palaeontology 135(1): 75-85 In the Carboniferous Shannon Basin, Western Ireland, the majority of ammonoids spanning the Serpukhovian-Bashkirian Stages (E1–R2 biozonal indices) are preserved as flattened, partial 2D impressions, for which identification is problematic. Ammonoid ornament changes through successive developmental stages of the animal, but the changes of ornament with ontogeny have not been studied for many of the taxa that occur in the Shannon Basin. An approach involving the ontogenetic study of all available 3D material from concretions and museum collections can be used to improve the confidence of identification of flattened material. This is described here for the following Bashkirian ammonoid species: Phillipsoceras circumplicatile, Vallites henkei and Reticuloceras subreticulatum. Systematic ontogenetic changes in ornament are described here for these taxa for the first time. This represents a first step towards advancing 2D ammonoid taxonomy, which will improve biostratigraphic resolution, with implications for large-scale ammonoid diversity and evolutionary studies. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0090-1 https://doi.org/10.1007/s13358-015-0090-1 https://sjp.pensoft.net/article/35166/ https://sjp.pensoft.net/article/35166/download/pdf/ en

10.1007/s13358-015-0092-z 2015-09-07 sjp

Ontogeny and morphology of the retrochoanitic septal necks of Agoniatitesvanuxemi from the Middle Devonian Cherry Valley Limestone Klofak,Susan Landman,Neil Septal membranes Auxiliary deposits Ammonoids Swiss Journal of Palaeontology 134(2): 233-244 Retrochoanitic septal necks represent the primitive condition in the Ammonoidea. In this study, we examine the morphology of the septal siphuncular complex of specimens of Agoniatitesvanuxemi (Hall 1879) from the Cherry Valley Limestone of New York State, USA. Specimens were embedded in epoxy, ground to a median plane and etched in 5 % HCl. The phosphatized membranes allow us to study the formation of the septal necks. Septal–siphuncular membranes occur next to the septal neck. They are adapical of the septum at the deepest point of the adorally projected ventrolateral saddle. Similar membranes occur on the adapical side of the septum on the dorsum in the deepest part of the adorally projected septa. The septal neck morphology on both the dorsal and ventral sides is well preserved. The septal neck begins in the same position on its dorsal and ventral sides, but projects farther adorally on the ventral side. By the third whorl, the adoral projection has doubled in size and is one-fourth to one-third the length of the chamber. This may be related to the deepening of the ventrolateral saddle through ontogeny. Auxiliary deposits are also present on the inside of the septal necks. They occur inside the dorsal and ventral sides of the septal neck at the adapical end. On some septa they appear to extend adapically beyond the end of the septal neck. A model for the morphogenesis of retrochoanitic septal necks is proposed based on the morphology observed in these specimens and previously published models. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0092-z https://doi.org/10.1007/s13358-015-0092-z https://sjp.pensoft.net/article/35151/ https://sjp.pensoft.net/article/35151/download/pdf/ en

10.1007/s13358-015-0094-x 2015-09-18 sjp

Special issue: recent advances in Cambrian to modern cephalopod research I Klug,Christian Hoffmann,René Fuchs,Dirk Marty,Daniel Cephalopoda Coleoidea Fossil Recent Swiss Journal of Palaeontology 134(2): 149-152 In September 2014, the 9th International Symposium Cephalopods—Present and Past was held at the Universitz of Zurich in combination with the 5th International Coleoid Symposium. Here, give a short account of these two events. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0094-x https://doi.org/10.1007/s13358-015-0094-x https://sjp.pensoft.net/article/35138/ https://sjp.pensoft.net/article/35138/download/pdf/ en

10.1007/s13358-015-0100-3 2015-09-25 sjp

The gladiuses in coleoid cephalopods: homology, parallelism, or convergence? Fuchs,Dirk Iba,Yasuhiro Cephalopoda Coleoidea Gladiuses Homology Parallelism Convergence Swiss Journal of Palaeontology 134(2): 187-197 In the cephalopod subclass Coleoidea, several homology problems exist, mainly owing to unsolved phylogenetic relationships between decabrachian orders. The present contribution reviews the “similarity” of the gladius, the chitinous shell rudiment in the dorsal mantle that provides rigid attachment sites for the locomotory-relevant musculature. As a secretion product of the shell sac epithelium as well as in the light of a common three-layered construction, both the octobrachian and the decabrachian gladius types most probably represent homologues with identical developmental mechanisms; “similarities” in gladius shapes in unrelated lineages therefore should be considered as the result of parallelism. Ultrastructural comparisons with Mesozoic coleoids suggest that an organic gladius is actually embedded in every proostracum-bearing phragmocone. It is therefore generally accepted that a gladius evolved through decalcification of a proostracum-bearing phragmocone. The character “gladius” accordingly represents a plesiomorphy within pro-ostracum-bearing coleoids. Whereas the gladius of Vampyroteuthis as well as the octopod fin supports indirectly derived from phragmoteuthid-like phragmocone via Mesozoic gladius types, the decabrachian gladius types can morphogenetically be linked with various ancestral groups (Belemnitida, Diplobelida, Groenlandibelidae, Vasseuria, Belosepiella). Experimental decalcification of a sepiid cuttlebone demonstrates furthermore that a gladius might have also evolved from a secondarily proostracum-less phragmocone. Life styles and habitats of living and Mesozoic gladius-bearing octobrachians are finally discussed in the light of our conclusions. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0100-3 https://doi.org/10.1007/s13358-015-0100-3 https://sjp.pensoft.net/article/35144/ https://sjp.pensoft.net/article/35144/download/pdf/ en

10.1007/s13358-015-0099-5 2015-09-25 sjp

Reworked crinoidal cherts and screwstones (Mississippian, Tournaisian/Visean) in the bedload of the River Maas, south-east Netherlands Donovan,Stephen Jagt,John W.M. Deckers,Mart Reworking Taphonomy Silicification Ichnology Oichnus simplex Swiss Journal of Palaeontology 135(2): 343-348 Rare Palaeozoic chert clasts collected from gravels in the bedload of the River Maas in the province of Limburg, south-east Netherlands, are rich in crinoid debris. These were transported during the Late Pliocene–Pleistocene by fluvial action from the southern Ardennes Massif (Namur-Dinant area, southern Belgium) and are of Early Carboniferous (Mississippian) age. Clasts are either completely chertified or may preserve macrofossils as natural moulds in a chert matrix; the latter are screwstones, a well-known lithology from rocks of this age. One screwstone preserves its fossiliferous debris, mainly crinoid columnals and pluricolumnals, in exquisite detail, including an archetypal ‘screw’, the mould of the axial canal. But the delicate ‘screw’ is not always preserved after fluvial transport. Further, the best-preserved specimen retains a mould of a pit in the latus, Oichnus simplex Bromley, probably a domicile excavated by an unmineralized invertebrate after the death of the crinoid. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0099-5 https://doi.org/10.1007/s13358-015-0099-5 https://sjp.pensoft.net/article/35192/ https://sjp.pensoft.net/article/35192/download/pdf/ en

10.1007/s13358-015-0097-7 2015-09-26 sjp

The Gastornis (Aves, Gastornithidae) from the Late Paleocene of Louvois (Marne, France) Mourer-Chauviré,Cécile Bourdon,Estelle Gastornis Louvois Sexual size dimorphism Thanetian Third coeval form Swiss Journal of Palaeontology 135(2): 327-341 The Late Paleocene locality of Louvois is located about 20 km south of Reims, in the department of Marne (France). These marly sediments have yielded numerous vertebrate remains. The Louvois fauna is coeval with those of the localities of Cernay-lès-Reims and Berru and is dated as reference-level MP6, late Thanetian. Here we provide a detailed description of the remains of giant flightless gastornithids that were preliminarily reported in a study of the vertebrate fauna from Louvois. These fragmentary gastornithid remains mainly include a carpometacarpus, several tarsometatarsi, and numerous pedal phalanges. These new avian fossils add to the fossil record of Gastornis, which has been reported from various Early Paleogene localities in the Northern Hemisphere. Tarsometatarsi and pedal phalanges show large differences in size, which may be interpreted as sexual size dimorphism. The specimens from Louvois are morphologically different from those of Gastornis parisiensis and G. russelli, from Cernay and Berru. The Louvois carpometacarpus is also different from that of the North American G. giganteus, and the Louvois pedal phalanges are shorter and stouter than in other species of Gastornis. Moreover, the Louvois tarsometatarsi are more similar to that of the much younger G. sarasini, from Monthelon, reference-level MP 10, late Ypresian. We refrain from assigning the Louvois specimens to a new species of Gastornis and we designate it as Gastornis sp., owing to the fragmentary nature of the material. However, the morphological features of the Louvois material are sufficiently distinct for us to propose that three different forms of Gastornis were present in the Late Paleocene of North-eastern France. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0097-7 https://doi.org/10.1007/s13358-015-0097-7 https://sjp.pensoft.net/article/35189/ https://sjp.pensoft.net/article/35189/download/pdf/ en

10.1007/s13358-015-0098-6 2015-09-28 sjp

Marine Early Triassic Osteichthyes from Spiti, Indian Himalayas Romano,Carlo Ware,David Brühwiler,Thomas Bucher,Hugo Brinkmann,Winand Neotethys Northern Indian Margin Gondwana Anoxia Biotic recovery Urohyal Swiss Journal of Palaeontology 135(2): 275-294 A new, marine osteichthyan (bony fish) fauna from the Early Triassic of northern India is presented. The material was collected in situ at localities within Pin Valley (Lahaul and Spiti District, Himachal Pradesh, India) and is dated as middle-late Dienerian (one specimen possibly earliest Smithian). The new ichthyofauna includes a lower jaw of the predatory basal ray-finned fish Saurichthys, a nearly complete specimen of a parasemionotid neopterygian (cf. Watsonulus cf. eugnathoides), as well as further articulated and disarticulated remains (Actinopterygii indet., Actinistia indet.), and thus comprises the most complete Triassic fish fossils known from the Indian subcontinent. Saurichthys is known from many Triassic localities and reached a global distribution rapidly after the Late Permian mass extinction event. Parasemionotidae, a species-rich family restricted to the Early Triassic, also achieved widespread distribution during this epoch. Comparison of the Spiti material with other parasemionotid species reveals similarities with Watsonulus eugnathoides from Madagascar. However, taxonomic ambiguities within Parasemionotidae prevent a specific attribution of the Spiti specimen. The new material also includes an isolated actinistian urohyal exhibiting morphology distinct from any previously described urohyal. Marine Dienerian black shale deposited on continental shelves are common not only in the Himalayas but also in other geographic regions. Anoxic depositional settings provide ideal preservational conditions for vertebrate fossils, suggesting that additional ichthyofaunas could still be discovered in marine Dienerian strata of other localities. The study of Early Triassic fish assemblages, including the presented one, is fundamental for our understanding of the great osteichthyan diversification after the Late Permian mass extinction event. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0098-6 https://doi.org/10.1007/s13358-015-0098-6 https://sjp.pensoft.net/article/35185/ https://sjp.pensoft.net/article/35185/download/pdf/ en

10.1007/s13358-015-0095-9 2015-09-29 sjp

The internal structure of varices and constrictions in Jurassic and Cretaceous ammonoid shells Radtke,Gregor Keupp,Helmut Ammonoid Shell structure Constrictions Varices Nepionic constriction Swiss Journal of Palaeontology 135(1): 109-124 The structure of pristine preserved shells of Jurassic and Cretaceous ammonoids was examined to identify whether the character states of varices and constrictions are homologous or homoplasic traits. The internal structure of varices and constrictions of phylloceratids, lytoceratids, perisphinctids and desmoceratids shows no interruptions in shell growth which implies that varices and constrictions were formed by continuous secretion. Their internal thickenings are formed by the nacre layer, while the inner prismatic layer thins to compensate the internal relief. The corresponding surface relief, e.g. furrows or ridges, is formed by undulation of a continuous outer prismatic layer, similar to the way common ribs are formed. The absence of an interruption in shell secretion is different from the well-examined nepionic constriction of the ammonitella. However, a delayed secretion of inner nacreous portions which are responsible for the actual thickening of varices and constrictions is characterized by “internal interruptions”; only the most inner nacreous portions seem to continue shell growth. The nacreous thickening is secreted subsequent to the formation of a distinct peristome, e.g. furrows, ridges or flares, i.e. not at the same time the peristome is formed. The thickening of varices and constrictions does not narrow an (interimistic) aperture and does not represent a halt in growth. However, certain areas of the shell (e.g. furrows, ridges, flares) are reinforced by this process. Morphological transition from smooth shelled varices to ridged and constricted habitus within phylloceratids and desmoceratids prove to be a homology. Owing to the general structural conformity of varices and constrictions in shells of Jurassic and Cretaceous taxa, we support the theory that they are homologous traits. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0095-9 https://doi.org/10.1007/s13358-015-0095-9 https://sjp.pensoft.net/article/35173/ https://sjp.pensoft.net/article/35173/download/pdf/ en

10.1007/s13358-015-0093-y 2015-09-29 sjp

New anatomical information on arms and fins from exceptionally preserved Plesioteuthis (Coleoidea) from the Late Jurassic of Germany Klug,Christian Fuchs,Dirk Schweigert,Günter Röper,Martin Tischlinger,Helmut Coleoidea Fossillagerstätten Late Jurassic Anatomy Phylogeny Behaviour Palaeoecology Swiss Journal of Palaeontology 134(2): 245-255 Plesioteuthis is a coleoid rather well known from the classical Fossillagerstätten of southern Germany (Solnhofen–Eichstätt region, Nusplingen). Here, we present two new specimens that display unusually preserved cirri-bearing arms and two pairs of fins. Based on these specimens, we shortly discuss in how far arm arrangement in the fossils might reflect behaviour. Additionally, we revise the phylogenetic position of the Jurassic vampyromorphs. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0093-y https://doi.org/10.1007/s13358-015-0093-y https://sjp.pensoft.net/article/35153/ https://sjp.pensoft.net/article/35153/download/pdf/ en

10.1007/s13358-015-0096-8 2015-10-05 sjp

Interpreting drag consequences of ammonoid shells by comparing studies in Westermann Morphospace Ritterbush,Kathleen Mass extinction Functional morphology Evolution Paleobiology Morphometrics Mesozoic Swiss Journal of Palaeontology 135(1): 125-138 Differently-shaped ammonoid shells present varied hydrodynamic properties, but the relevance of shell shape to ammonoid paleoecology is unclear. To examine trends in ammonoid shell shape that relate to hydrodynamic consequences, we project ammonoid shell data into Westermann Morphospace. Operationally similar to other multivariate methods, Westermann Morphospace features a fixed frame and scaling calibrated around the most common planispiral morphotypes. First, results of hydrodynamic experiments are projected into the space, to test for associations between recognized morphotypes and measures of drag force. Discocone shell shapes produce minimal drag at small sizes and/or low speeds, while oxycone shells produce minimal drag at higher sizes and/or faster speeds. If hydrodynamic efficiency was a first-order selective pressure on shell shapes produced by ammonoids, an association is expected between larger adult shells and oxyconic geometry. To assess this, published shape data are shown in Westermann Morphospace to examine intervals of evolutionary interest. A rough analysis of Late Triassic ammonoid shell shapes shows the expected association between larger shells and oxyconic geometry, but the association is completely reversed immediately after the end-Triassic mass extinction, and the association does not return among the “recovered” middle Jurassic ammonoids. This suggests that hydrodynamics suited for high-metabolism rapid locomotion were not a first-order influence on shell shape immediately after the extinction, or that other hydrodynamic influences require assessment by different methods. Lastly, shells of a series of endemic chronospecies of Cretaceous Neogastroplites are compared, showing a shift to inclusion of more discoconic shells at smaller sizes, resulting in minimal drag for more of the ontogenetic series as a whole. Together, these results indicate that size must be considered when interpreting the hydrodynamic efficiency of ammonoid shells. Flank shape, ornament and soft tissue behaviors may be as or more important than first-order shell geometry, and quantification of their importance and influence on varied shell geometries will benefit from further experimental results. info:eu-repo/semantics/altIdentifier/eissn/1664-2384 info:eu-repo/semantics/altIdentifier/pissn/1664-2376 info:eu-repo/semantics/openAccess CC BY 4.0 Pensoft Publishers 2015 Research Article text/html info:doi:10.1007/s13358-015-0096-8 https://doi.org/10.1007/s13358-015-0096-8 https://sjp.pensoft.net/article/35174/ https://sjp.pensoft.net/article/35174/download/pdf/ en cGFnZT0xJnNldD1zanAmZnJvbT0mdW50aWw9Jm1ldGFkYXRhX3ByZWZpeD1vYWlfZGM=