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Journal of Systematic Palaeontology最新文献

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Skeletal morphology and phylogenetic relationships of the Late Cretaceous freshwater ray Myledaphus bipartitus (Chondrichthyes; Batomorphii). 晚白垩世淡水鳐鱼Myledaphus bipartitus （chondrichth目；Batomorphii）骨骼形态和系统发育关系。
IF 2.9 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2026-06-25 eCollection Date: 2026-07-03 DOI: 10.1080/14772019.2026.2679622
Julia Türtscher, Patrick L Jambura, Jürgen Kriwet
{"title":"Skeletal morphology and phylogenetic relationships of the Late Cretaceous freshwater ray <i>Myledaphus bipartitus</i> (Chondrichthyes; Batomorphii).","authors":"Julia Türtscher, Patrick L Jambura, Jürgen Kriwet","doi":"10.1080/14772019.2026.2679622","DOIUrl":"10.1080/14772019.2026.2679622","url":null,"abstract":"<p><p>In this study, we present the first comprehensive description of the skeletal morphology of the freshwater-tolerant ray †<i>Myledaphus bipartitus</i>, a Late Cretaceous batomorph known from North America. These new data are based on an exceptionally well-preserved specimen from the Campanian of the Dinosaur Park Formation in Alberta, Canada, which provides valuable morphological details previously lacking for this taxon. A detailed morphological analysis was conducted, which revealed a unique combination of plesiomorphic and derived characters. Phylogenetic analyses provide support for the placement of †<i>M. bipartitus</i> within the order Rhinopristiformes, a group that includes modern guitarfishes and sawfishes. As the oldest known freshwater-tolerant representative of Rhinopristiformes, †<i>M. bipartitus</i> thus offers novel insights into the early ecological diversification of this group. The present study underscores the broader necessity for comprehensive morphological and systematic research on Late Cretaceous batomorphs. Nevertheless, the obtained results demonstrate the value of combining detailed morphological data with rigorous phylogenetic methods to elucidate the evolutionary history of extinct and extant batomorph lineages.</p>","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"24 2","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7619452/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148898427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Articulated specimens provide new insights into the iconic Mesozoic shark genus Sphenodus. 铰接标本提供了新的见解，以标志性的中生代鲨鱼属Sphenodus。
IF 2.9 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2025-06-20 eCollection Date: 2025-12-31 DOI: 10.1080/14772019.2025.2507014
Eduardo Villalobos-Segura, Manuel Amadori, Sebastian Stumpf, Patrick L Jambura, Arnaud Begat, Faviel A Lopez-Romero, Günter Schweigert, Erin E Maxwell, Jürgen Kriwet
{"title":"Articulated specimens provide new insights into the iconic Mesozoic shark genus <i>Sphenodus</i>.","authors":"Eduardo Villalobos-Segura, Manuel Amadori, Sebastian Stumpf, Patrick L Jambura, Arnaud Begat, Faviel A Lopez-Romero, Günter Schweigert, Erin E Maxwell, Jürgen Kriwet","doi":"10.1080/14772019.2025.2507014","DOIUrl":"10.1080/14772019.2025.2507014","url":null,"abstract":"<p><p>The fossil record of sharks and rays (Elasmobranchii) consists predominantly of isolated teeth, complicating their taxonomic and phylogenetic inferences. Consequently, the study of holomorphic specimens provides crucial information to reassess existing phylogenetic and taxonomic interpretations. The extinct Mesozoic shark genus †<i>Sphenodus</i> exemplifies these challenges. Initially classified based on dental traits, the genus has undergone multiple revisions, reflecting its taxonomic instability. However, the presence of skeletal remains assigned to †'<i>Sphenodus</i>' <i>macer</i> and †'<i>S</i>.' <i>nitidus</i> provides an opportunity to re-evaluate the phylogenetic and taxonomic relations of this genus. In this study, we critically reviewed the systematics and taxonomic relationships of †<i>Sphenodus</i>, through an exhaustive literature review and comparison with previous phylogenetic hypotheses. Our analysis of skeletal characters suggests the synonymy of †<i>S. macer</i> and †<i>S. nitidus</i> and supports previous Hexanchiformes classifications for the genus, placing it in a close relation to †<i>Notidanoides</i> forming a clade in sister relation to Hexanchidae. However, the teeth originally used to define †<i>Sphenodus</i> lack diagnostic traits for taxonomic identification, rendering†'<i>Sphenodus</i>' a <i>nomen dubium</i>. Consequently, we introduce a new name, †<i>Archaeogracilidens</i>, to include the species based on skeletal material and that present teeth with a well-preserved root and a crown, establishing a more stable systematic framework for this group.</p>","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"23 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7617882/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144602141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New taxa of giant caimans from the southernmost hyperdiverse wetlands of the South American late Miocene 南美洲晚中新世最南端超多样化湿地的巨凯门鳄新类群
IF 2.6 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2024-08-28 DOI: 10.1080/14772019.2024.2375027
Paula Bona, Francisco Barrios, Martín Daniel Ezcurra, María Victoria Fernandez Blanco, Giovanne Mendes Cidade
{"title":"New taxa of giant caimans from the southernmost hyperdiverse wetlands of the South American late Miocene","authors":"Paula Bona, Francisco Barrios, Martín Daniel Ezcurra, María Victoria Fernandez Blanco, Giovanne Mendes Cidade","doi":"10.1080/14772019.2024.2375027","DOIUrl":"https://doi.org/10.1080/14772019.2024.2375027","url":null,"abstract":"Here we present a comparative anatomical study of large late Miocene alligatorids of Argentina (Ituzaingó Formation), in which we analyse their taxonomy, morphological disparity, and phylogenetic r...","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"4 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142205290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 platanistoid (Odontoceti: Squalodelphinidae) from the Early Miocene of Japan 来自日本早中新世的一种新的桡足类（Odontoceti: Squalodelphinidae)
IF 2.6 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2024-08-18 DOI: 10.1080/14772019.2024.2378783
Yoshihiro Tanaka, Ryohei Nakagawa
{"title":"A new platanistoid (Odontoceti: Squalodelphinidae) from the Early Miocene of Japan","authors":"Yoshihiro Tanaka, Ryohei Nakagawa","doi":"10.1080/14772019.2024.2378783","DOIUrl":"https://doi.org/10.1080/14772019.2024.2378783","url":null,"abstract":"Extant Ganges and Indus river dolphins are endangered species, but their relatives were more diverse in the past. The family Squalodelphinidae is a group of Miocene relatives of Ganges and Indus ri...","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"52 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142205288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 species of Araripesuchus with durophagous dentition increases the ecological disparity among uruguaysuchid crocodyliforms 具有吞咽性牙齿的新种鳄鱼（Araripesuchus）加大了乌拉圭鳄形目之间的生态差异
IF 2.6 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2024-08-01 DOI: 10.1080/14772019.2024.2373987
María Lucila Fernández Dumont, Diego Pol, Paula Bona, Sebastián Apesteguía
{"title":"A new species of Araripesuchus with durophagous dentition increases the ecological disparity among uruguaysuchid crocodyliforms","authors":"María Lucila Fernández Dumont, Diego Pol, Paula Bona, Sebastián Apesteguía","doi":"10.1080/14772019.2024.2373987","DOIUrl":"https://doi.org/10.1080/14772019.2024.2373987","url":null,"abstract":"Notosuchia is a group of crocodyliforms with mostly terrestrial habits that lived during the Mesozoic and up to the Miocene. Within this group Uruguaysuchidae is so far represented by eight species...","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"3 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141882586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 species of black drum (Acanthuriformes: Sciaenidae: Pogonias Lacépède, 1802) from the Upper Miocene of Argentina 阿根廷上中新世的一种新黑鼓（Acanthuriformes: Sciaenidae: Pogonias Lacépède, 1802)
IF 2.6 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2024-07-22 DOI: 10.1080/14772019.2024.2368182
Jorge I. Noriega, Matías J. Peralta, Sebastián Monsalvo, Ernesto Brunetto, Diego Brandoni
{"title":"A new species of black drum (Acanthuriformes: Sciaenidae: Pogonias Lacépède, 1802) from the Upper Miocene of Argentina","authors":"Jorge I. Noriega, Matías J. Peralta, Sebastián Monsalvo, Ernesto Brunetto, Diego Brandoni","doi":"10.1080/14772019.2024.2368182","DOIUrl":"https://doi.org/10.1080/14772019.2024.2368182","url":null,"abstract":"Pogonias blettleri sp. nov., a new species of black drum (Acanthuriformes, Sciaenidae) from the marine Upper Miocene Paraná Formation, which crops out in the Province of Entre Ríos, Argentina, is d...","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"110 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141779361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
The phylogeny of Macraucheniidae (Mammalia, Panperissodactyla, Litopterna) at the genus level Macraucheniidae （哺乳纲，泛蹄目，蹄目）的属级系统发育
IF 2.6 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2024-07-19 DOI: 10.1080/14772019.2024.2364201
Leonardo Souza Lobo, Javier N. Gelfo, Sergio A. K. de Azevedo
{"title":"The phylogeny of Macraucheniidae (Mammalia, Panperissodactyla, Litopterna) at the genus level","authors":"Leonardo Souza Lobo, Javier N. Gelfo, Sergio A. K. de Azevedo","doi":"10.1080/14772019.2024.2364201","DOIUrl":"https://doi.org/10.1080/14772019.2024.2364201","url":null,"abstract":"Macraucheniidae is one of the most diverse families of South American native ungulates. In the last decade, Macraucheniidae systematics has been the focus of several studies with the aim of enhanci...","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"33 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141746018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 genus of metriorhynchid crocodylomorph from the Lower Cretaceous of Germany 德国下白垩统的一种新的元鳄形目鳄科动物
IF 2.6 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2024-07-18 DOI: 10.1080/14772019.2024.2359946
Sven Sachs, Mark T. Young, Jahn J. Hornung, Thomas Cowgill, Julia A. Schwab, Stephen L. Brusatte
{"title":"A new genus of metriorhynchid crocodylomorph from the Lower Cretaceous of Germany","authors":"Sven Sachs, Mark T. Young, Jahn J. Hornung, Thomas Cowgill, Julia A. Schwab, Stephen L. Brusatte","doi":"10.1080/14772019.2024.2359946","DOIUrl":"https://doi.org/10.1080/14772019.2024.2359946","url":null,"abstract":"Here we describe a new genus and species of metriorhynchid crocodylomorph, Enalioetes schroederi gen. et sp. nov., from the lower Valanginian Stadthagen Formation (Lower Cretaceous) of north-wester...","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"7 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141779362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Comptonatus chasei, a new iguanodontian dinosaur from the Lower Cretaceous Wessex Formation of the Isle of Wight, southern England 英国南部怀特岛下白垩世韦塞克斯地层中新发现的蜥脚类恐龙--Comptonatus chasei
IF 2.6 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2024-07-09 DOI: 10.1080/14772019.2024.2346573
Jeremy A. F. Lockwood, David M. Martill, Susannah C. R. Maidment
{"title":"Comptonatus chasei, a new iguanodontian dinosaur from the Lower Cretaceous Wessex Formation of the Isle of Wight, southern England","authors":"Jeremy A. F. Lockwood, David M. Martill, Susannah C. R. Maidment","doi":"10.1080/14772019.2024.2346573","DOIUrl":"https://doi.org/10.1080/14772019.2024.2346573","url":null,"abstract":"A new iguanodontian dinosaur, Comptonatus chasei gen. et sp. nov., is described from the Lower Cretaceous Wessex Formation of the Isle of Wight. These strata provide an important record of a critic...","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"155 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141613122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
Presence of Cernictis and Lutravus (Ictonychinae, Mustelidae, Carnivora) in eastern Asia and the dispersal of Ictonychinae during the Late Miocene Cernictis和Lutravus（食蚁兽科，鼬科，食肉目）在亚洲东部的存在以及食蚁兽科在晚中新世的扩散
IF 2.6 2区 地球科学
Journal of Systematic Palaeontology Pub Date : 2024-07-05 DOI: 10.1080/14772019.2024.2348032
Qigao Jiangzuo, Xiaoming Wang, Chris J. Law, Denise Su, Yi Jia, Shijie Li, Jiao Fu, Zhenyu Kuang, Jiayong Cao, Bin Zou, Sukuan Hou, Shiqi Wang, Tao Deng, Xueping Ji
{"title":"Presence of Cernictis and Lutravus (Ictonychinae, Mustelidae, Carnivora) in eastern Asia and the dispersal of Ictonychinae during the Late Miocene","authors":"Qigao Jiangzuo, Xiaoming Wang, Chris J. Law, Denise Su, Yi Jia, Shijie Li, Jiao Fu, Zhenyu Kuang, Jiayong Cao, Bin Zou, Sukuan Hou, Shiqi Wang, Tao Deng, Xueping Ji","doi":"10.1080/14772019.2024.2348032","DOIUrl":"https://doi.org/10.1080/14772019.2024.2348032","url":null,"abstract":"Cernictis and Lutravus are two early members of Ictonychinae (Mustelidae) from North America, but their origin and phylogenetic position are unclear. In this study, we describe a rich Late Miocene ...","PeriodicalId":50028,"journal":{"name":"Journal of Systematic Palaeontology","volume":"68 1","pages":""},"PeriodicalIF":2.6,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141551888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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
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