Journal of Vertebrate Paleontology最新文献_第10页

A new sturgeon from the Upper Cretaceous Horseshoe Canyon Formation in central Alberta, Canada 加拿大阿尔伯塔省中部上白垩纪马蹄峡谷组的新鲟鱼

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-08-08 DOI: 10.1080/02724634.2023.2232846

Alison M. Murray, Luke E. Nelson, D. Brinkman

引用次数: 0

A new chigutisaurid (Brachyopoidea, Temnospondyli) with soft tissue preservation from the Triassic Sydney Basin, New South Wales, Australia 澳大利亚新南威尔士州三叠纪悉尼盆地一种保存有软组织的新chigutisaurid（Brachyopoidea，Temnospyridi）

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-08-03 DOI: 10.1080/02724634.2023.2232829

Lachlan J. Hart, B. Gee, Patrick M. Smith, M. McCurry

{"title":"A new chigutisaurid (Brachyopoidea, Temnospondyli) with soft tissue preservation from the Triassic Sydney Basin, New South Wales, Australia","authors":"Lachlan J. Hart, B. Gee, Patrick M. Smith, M. McCurry","doi":"10.1080/02724634.2023.2232829","DOIUrl":"https://doi.org/10.1080/02724634.2023.2232829","url":null,"abstract":"ABSTRACT Compared with other Mesozoic tetrapod groups, chigutisaurid fossils from Australia are rare, with only three named taxa described from the continent. From Queensland, Keratobrachyops australis is known from the Triassic, and Siderops kehli from the Jurassic. Koolasuchus cleelandi, from the Cretaceous of Victoria, represents the youngest-known temnospondyl globally. Here we describe the first chigutisaurid from New South Wales, from the Early–Middle Triassic Terrigal Formation. The specimen (AM F125866) comprises an articulated, near-complete skeleton, presented in ventral aspect, as well as outlines of soft tissue. The new taxon preserves features that indicate an affinity with Chigutisauridae, confirming previous hypotheses on the presence of large-bodied chigutisaurids in the Triassic of Australia. The new Terrigal chigutisaurid is only the second chigutisaurid known from the Lower Triassic and fourth from Australia overall. The distribution of brachycephalic temnospondyls throughout the Mesozoic suggests specific adaptations led to the long-term survival of chigutisaurids, especially across the end-Triassic extinction event.","PeriodicalId":17597,"journal":{"name":"Journal of Vertebrate Paleontology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43657950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new clevosaurid (Lepidosauria: Rhynchocephalia) from the Upper Triassic of India 标题印度上三叠世一新clevosaurus(鳞龙目:舌头龙目)

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-08-03 DOI: 10.1080/02724634.2023.2232833

M. S. Bhat, Debajit Datta, S. Ray, P. M. Datta

{"title":"A new clevosaurid (Lepidosauria: Rhynchocephalia) from the Upper Triassic of India","authors":"M. S. Bhat, Debajit Datta, S. Ray, P. M. Datta","doi":"10.1080/02724634.2023.2232833","DOIUrl":"https://doi.org/10.1080/02724634.2023.2232833","url":null,"abstract":"ABSTRACT A new clevosaurid rhynchocephalian is described from the Upper Triassic Tiki Formation of the Rewa Gondwana Basin of India. The material is based on several partial craniomandibular elements containing acrodont and fully ankylosed tooth implantations and on the basis of multiple diagnostic features is assigned to a new taxon, Clevosaurus nicholasi. Phylogenetic analysis nests the Tiki rhynchocephalian within the clade Clevosauridae, where it is recovered as an early-diverging taxon basal to the other clevosaurs except for a clade comprising C. convallis + Sigmala sigmala. The autapomorphic characters of Clevosaurus nicholasi include a very robust dentary with an obliquely angled narrow lip of the secondary bone at the symphysis, anteriorly bifurcated Meckelian canal, a sub-dental shelf on the dentary, acrodont marginal anterior teeth, and absence of or smooth lateral and medial wear facets on the marginal dentary and maxillary teeth, respectively. The Late Triassic rhynchocephalian record of the Gondwana is relatively sparse in comparison with that of the Laurasian regions, and the new clevosaur represents the first Late Triassic record from India. Based on the paleobiogeographic distribution, a possible Gondwanan origin for Clevosauridae is hypothesized.","PeriodicalId":17597,"journal":{"name":"Journal of Vertebrate Paleontology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47682679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new amphibamiform (Temnospondyli: Branchiosauridae) from the lower Permian of the Czech Boskovice Basin 捷克博斯科维茨盆地下二叠世两栖类一新(Temnospondyli: Branchiosauridae)

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-08-01 DOI: 10.1080/02724634.2023.2231994

R. Werneburg, J. Schneider, S. Štamberg, B. Legler, R. Schoch

{"title":"A new amphibamiform (Temnospondyli: Branchiosauridae) from the lower Permian of the Czech Boskovice Basin","authors":"R. Werneburg, J. Schneider, S. Štamberg, B. Legler, R. Schoch","doi":"10.1080/02724634.2023.2231994","DOIUrl":"https://doi.org/10.1080/02724634.2023.2231994","url":null,"abstract":"ABSTRACT The temnospondyl clade Amphibamiformes includes small newt-like forms that dwelled in freshwater lakes in the Pennsylvanian and Lower Permian of Europe and North America. Here we report a new genus and species, Piasimotriton kochovi, from the early Permian Boskovice Basin, Czech Republic. It has a unique combination of characters, among which the following ones rank as most important: (1) extremely elongated basipterygoid process forming a paired elongate facet for articulation with basal plate, (2) parasphenoid with broad and much abbreviated basal plate, about 2.5 times wider than long, (3) tooth crown with lateral crest, (4) premaxilla with 18 tiny teeth, and (5) a strong dermal ornament on the median skull elements. Piasimotriton kochovi has probably pedicellate teeth. Phylogenetic analysis finds Piasimotriton nests with the Melanerpeton clade with Melanerpeton, Leptorophus, and Schoenfelderpeton, with “Melanerpeton” gracile forming its sister taxon. The possession of various features that are also found in lissamphibians indicates a more widespread distribution of these within their putative stem-group. The stomach content of Piasimotriton kochovi consists of segmented thorax remains of small crustaceans. Piasimotriton probably competed with osteichthyans for arthropod prey and was only present in a short time interval of the lake's existence.","PeriodicalId":17597,"journal":{"name":"Journal of Vertebrate Paleontology","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42450887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The earliest occurrence of Equus in South Asia 最早出现在南亚的马属动物

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-07-28 DOI: 10.1080/02724634.2023.2227236

Naveen Singh, A. Jukar, R. Rana, Ramanuj Patel

{"title":"The earliest occurrence of Equus in South Asia","authors":"Naveen Singh, A. Jukar, R. Rana, Ramanuj Patel","doi":"10.1080/02724634.2023.2227236","DOIUrl":"https://doi.org/10.1080/02724634.2023.2227236","url":null,"abstract":"ABSTRACT Fossil horses are ubiquitous members of late Neogene and Quaternary ecosystems in Eurasia and Africa. The genus Equus is conventionally thought to be a Pleistocene immigrant into Eurasia from North America, and the concurrent appearance of these monodactyl equids in Eurasia around 2.58 Ma is accepted as the Equus Datum. Here, we report on a specimen of Equus found near the village of Jhil, from the latest Pliocene of the Upper Siwaliks of India. The specimen was recovered from sediments that are lithologically equivalent to the Upper Pliocene Saketi Formation, and have been dated paleomagnetically to lie just below the Gauss–Matuyama boundary, therefore, the latest Pliocene. Our comparative work shows that the anatomy of Jhil specimen is consistent with the Early Pleistocene Siwalik horse, Equus sivalensis. Our finding extends the temporal distribution of this species into the latest Pliocene, and adds to our understanding of the variation in this species of horse. We also argue that along with potential latest Pliocene occurrences of Equus from Europe, and accounting for the Signor–Lipps effect, the Equus Datum should be revised as a latest Pliocene event.","PeriodicalId":17597,"journal":{"name":"Journal of Vertebrate Paleontology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46338232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Early Cretaceous radiation of teleosts recorded by the otolith-based ichthyofauna from the Valanginian of Wąwał, central Poland 波兰中部Wąwał的Valanginian的以耳石为基础的鱼组所记录的早白垩世硬鱼鱼的辐射

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-07-28 DOI: 10.1080/02724634.2023.2232008

Maciej K. Pindakiewicz, K. Hryniewicz, A. Kaim

{"title":"Early Cretaceous radiation of teleosts recorded by the otolith-based ichthyofauna from the Valanginian of Wąwał, central Poland","authors":"Maciej K. Pindakiewicz, K. Hryniewicz, A. Kaim","doi":"10.1080/02724634.2023.2232008","DOIUrl":"https://doi.org/10.1080/02724634.2023.2232008","url":null,"abstract":"ABSTRACT We report a Valanginian (Early Cretaceous) otolith-based ichthyofauna from a section at Wąwał in central Poland. We describe one new genus (Palaeoargentina gen. nov.), six new otolith-based species (Pteralbula polonica sp. nov., Protalbula pentangularis sp. nov., Kokenichthys kuteki sp. nov., Protoelops gracilis sp. nov., Palaeoargentina plicata sp. nov., Archaeotolithus aptychoides sp. nov.) from Wąwał and compare them to species known from similar assemblages elsewhere. The comparison of teleost diversity shows similarity to the Aptian (late Early Cretaceous) and less distinctly to the Maastrichtian (latest Cretaceous) assemblages, rather than to its coeval equivalents from Germany and southern England, and indicates that a considerable teleost diversity already existed before the mid-Cretaceous. The vertical succession of otolith taxa in the Wąwał section is in concordance to the pattern already revealed from the succession of bivalves and other benthic invertebrates and it is attributed to sea level and temperature variations. Previously identified causes of benthic invertebrate succession in the Wąwał section are used to infer paleoenvironmental factors governing fish distribution in the Valanginian marine environment recorded at this site. The new findings suggest that the radiation of teleosts started before the Valanginian, and it was a relatively long and apparently gradual process. This fossil association also reveals a significant shift in the abundance ratio of fish otoliths vs. cephalopod statoliths in fully marine deposits, with otoliths much more abundant than the statoliths in Valanginian and younger sediments while it is otherwise in the Jurassic deposits.","PeriodicalId":17597,"journal":{"name":"Journal of Vertebrate Paleontology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48691767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A stem therian mammal from the Lower Cretaceous of Germany 产于德国白垩纪晚期的一种茎类哺乳动物

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-07-27 DOI: 10.1080/02724634.2023.2224848

Thomas Martin, A. Averianov, J. Schultz, Achim H. Schwermann

引用次数: 1

New specimen and redescription of Anisodontosaurus greeri (Moenkopi Formation: Middle Triassic) and the spatiotemporal origins of Trilophosauridae 格里里无齿龙的新标本与重新描述（莫恩科皮组：三叠纪中期）及三棱龙科的时空起源

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-07-24 DOI: 10.1080/02724634.2023.2220015

D. Foffa, S. Nesbitt, B. Kligman, R. Butler, M. Stocker

{"title":"New specimen and redescription of Anisodontosaurus greeri (Moenkopi Formation: Middle Triassic) and the spatiotemporal origins of Trilophosauridae","authors":"D. Foffa, S. Nesbitt, B. Kligman, R. Butler, M. Stocker","doi":"10.1080/02724634.2023.2220015","DOIUrl":"https://doi.org/10.1080/02724634.2023.2220015","url":null,"abstract":"ABSTRACT Anisodontosaurus greeri is an enigmatic small-bodied tetrapod with a heterodont dentition from the Holbrook Member of the Moenkopi Formation (Middle Triassic) of Arizona (U.S.A.). The evolutionary relationships of this taxon have long been debated and remain uncertain. Using micro-computed tomography (µCT) scans we redescribe the holotype of Anisodontosaurus greeri (UCMP 37804), as well as an additional specimen (MNA.V.1478) that had been informally referred to this taxon. Our new data reveal hidden details of the dentition (i.e., ankylothecodonty and absence of replacement teeth) that, in combination with the tricuspid and mediolaterally expanded crowns, support a referral of both specimens to the archosauromorph clade Trilophosauridae. The referral of MNA.V.1478 to Anisodontosaurus greeri is supported by the unique anatomy of the highly differentiated dentition (i.e., ‘figure of 8’-shaped premolariforms in occlusal views; mesiodistally short tooth row; presence of a distal ‘molariform’ crown). Comparison of Anisodontosaurus greeri with other trilophosaurids highlights marked similarities with Variodens inopinatus from the Upper Triassic deposits of the U.K. Our cladistic analyses confirm these observations, and recover, for the first time, two distinct lineages within Trilophosauridae: one geologically long-lived and comprising Anisodontosaurus and Variodens; and one comprising Tricuspisaurus, Trilophosaurus spp., and Spinosuchus. These results imply that: (i) Anisodontosaurus is one of the oldest known trilophosaurids worldwide and the oldest in North America; (ii) trilophosaurids achieved a broad distribution at low latitudes within western Pangea by the Middle Triassic; (iii) small body sizes were more common than previously thought among trilophosaurids.","PeriodicalId":17597,"journal":{"name":"Journal of Vertebrate Paleontology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42480391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

New mammalian local faunas from the first ca. 80 ka of the Paleocene in northeastern Montana and a revised model of biotic recovery from the Cretaceous–Paleogene mass extinction 蒙大拿东北部古新世约80 ka以来的新哺乳动物群落和白垩纪-古近纪大灭绝后生物恢复的修正模型

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-07-24 DOI: 10.1080/02724634.2023.2222777

Jordan R. Claytor, Lucas N. Weaver, T. Tobin, Gregory P. Wilson Mantilla

{"title":"New mammalian local faunas from the first ca. 80 ka of the Paleocene in northeastern Montana and a revised model of biotic recovery from the Cretaceous–Paleogene mass extinction","authors":"Jordan R. Claytor, Lucas N. Weaver, T. Tobin, Gregory P. Wilson Mantilla","doi":"10.1080/02724634.2023.2222777","DOIUrl":"https://doi.org/10.1080/02724634.2023.2222777","url":null,"abstract":"ABSTRACT The earliest phases of mammalian recovery following the Cretaceous–Paleogene (K–Pg) mass extinction are incompletely known but crucial to understanding the development of modern terrestrial ecosystems. Here we report new mammalian faunal data from three vertebrate microfossil assemblages in the Hell Creek region of northeastern Montana, the deposition of which we constrain to within the first 28–80 ka of the Paleocene using new stratigraphic observations within a high-resolution chronostratigraphic framework. We quantified the taxonomic diversity among these three assemblages and five other assemblages from both the Hell Creek region and Denver Basin, together spanning the first ca. 300 ka post-K–Pg mass extinction. Our results allowed us to sub-divide the established ‘disaster’ and ‘recovery’ phases of recovery into the following sub-phases: (i) early disaster, characterized by the presence of ‘dead clades walking,’ high relative abundance of bloom taxa, and the appearance of post-mass-extinction immigrants, (ii) late disaster, characterized by a reduction in the number of ‘dead clades walking,’ continued high relative abundance of bloom taxa, and a more diverse assemblage of immigrants, (iii) early recovery, characterized by decreased relative abundance of bloom taxa, and continued immigration, and (iv) late recovery, characterized by the onset of in situ diversification. We note important differences in the pattern and timing of mammalian faunal succession between the Hell Creek and Denver Basin, suggesting that post-K–Pg mammalian recovery was spatially heterogeneous. Our results provided a new model for post-K–Pg mammalian biotic recovery that can now be tested with other earliest Paleocene assemblages across western North America.","PeriodicalId":17597,"journal":{"name":"Journal of Vertebrate Paleontology","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48866013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A replacement name for Sullivania Čerňanský et al., 2023, non Sullivania Palmer, 1947 替代名称为沙利文Čerňanský等人，2023年，非沙利文帕尔默，1947年

IF 1.4 4区地球科学

Journal of Vertebrate Paleontology Pub Date : 2023-07-24 DOI: 10.1080/02724634.2023.2231254

A. Čerňanský, Rodolphe Tabuce, Dominique Vidalenc

引用次数: 0