来自英国牛津郡牛津粘土组的一种新的上龙

IF 1.8 3区 地球科学 Q2 PALEONTOLOGY
H. Ketchum, R. Benson
{"title":"来自英国牛津郡牛津粘土组的一种新的上龙","authors":"H. Ketchum, R. Benson","doi":"10.4202/app.00887.2021","DOIUrl":null,"url":null,"abstract":"We describe the anatomy of a new longirostrine pliosaurid, Eardasaurus powelli gen. et sp. nov., based on a substantially complete skeleton from the Middle Jurassic Oxford Clay Formation of Oxfordshire, UK. The specimen brings the number of pliosaurid genera known from the Oxford Clay Formation up to a minimum of six, contributing to our understanding of the most taxonomically rich pliosaurid assemblage. The teeth of Eardasaurus powelli gen. et sp. nov. have “carina-like” apicobasal enamel ridges, previously only identified in Liopleurodon ferox among Middle Jurassic pliosaurids, and which may be more widespread among early pliosaurids than has been recognised. Our phylogenetic analysis shows that Eardasaurus powelli gen. et sp. nov. is nested within Middle Jurassic thalassophonean pliosaurids, slightly more derived than Peloneustes philarchus , as sister to a group comprising “ Pliosaurus ” andrewsi , Simolestes vorax , Liopleurodon ferox , Pliosaurus spp. and brachauchenines.","PeriodicalId":50887,"journal":{"name":"Acta Palaeontologica Polonica","volume":null,"pages":null},"PeriodicalIF":1.8000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UK\",\"authors\":\"H. Ketchum, R. Benson\",\"doi\":\"10.4202/app.00887.2021\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We describe the anatomy of a new longirostrine pliosaurid, Eardasaurus powelli gen. et sp. nov., based on a substantially complete skeleton from the Middle Jurassic Oxford Clay Formation of Oxfordshire, UK. The specimen brings the number of pliosaurid genera known from the Oxford Clay Formation up to a minimum of six, contributing to our understanding of the most taxonomically rich pliosaurid assemblage. The teeth of Eardasaurus powelli gen. et sp. nov. have “carina-like” apicobasal enamel ridges, previously only identified in Liopleurodon ferox among Middle Jurassic pliosaurids, and which may be more widespread among early pliosaurids than has been recognised. Our phylogenetic analysis shows that Eardasaurus powelli gen. et sp. nov. is nested within Middle Jurassic thalassophonean pliosaurids, slightly more derived than Peloneustes philarchus , as sister to a group comprising “ Pliosaurus ” andrewsi , Simolestes vorax , Liopleurodon ferox , Pliosaurus spp. and brachauchenines.\",\"PeriodicalId\":50887,\"journal\":{\"name\":\"Acta Palaeontologica Polonica\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2022-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Palaeontologica Polonica\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.4202/app.00887.2021\",\"RegionNum\":3,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PALEONTOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Palaeontologica Polonica","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.4202/app.00887.2021","RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PALEONTOLOGY","Score":null,"Total":0}
引用次数: 3

摘要

我们描述了一种新的长颈上龙,Eardasaurus powelli gen. et sp. nov.,基于英国牛津郡中侏罗世牛津粘土组的基本完整骨架。该标本使牛津粘土组已知的上龙属数量至少达到6个,有助于我们了解分类最丰富的上龙组合。波利耳达龙(Eardasaurus powelli gen. et sp. 11 .)的牙齿具有“隆状”的尖基底牙釉质脊,这种牙釉质脊以前只在中侏罗世上龙中发现过,可能在早期上龙中更为普遍。我们的系统发育分析表明,Eardasaurus powelli gen. et sp. 11 .嵌套在中侏罗世thalassophonean pliosaurids中,与Peloneustes philarchus的衍生性略高,是由andrewsi“Pliosaurus”、Simolestes vorax、Liopleurodon ferox、Pliosaurus spp.和brachachenines组成的一个类群的姐妹。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new pliosaurid from the Oxford Clay Formation of Oxfordshire, UK
We describe the anatomy of a new longirostrine pliosaurid, Eardasaurus powelli gen. et sp. nov., based on a substantially complete skeleton from the Middle Jurassic Oxford Clay Formation of Oxfordshire, UK. The specimen brings the number of pliosaurid genera known from the Oxford Clay Formation up to a minimum of six, contributing to our understanding of the most taxonomically rich pliosaurid assemblage. The teeth of Eardasaurus powelli gen. et sp. nov. have “carina-like” apicobasal enamel ridges, previously only identified in Liopleurodon ferox among Middle Jurassic pliosaurids, and which may be more widespread among early pliosaurids than has been recognised. Our phylogenetic analysis shows that Eardasaurus powelli gen. et sp. nov. is nested within Middle Jurassic thalassophonean pliosaurids, slightly more derived than Peloneustes philarchus , as sister to a group comprising “ Pliosaurus ” andrewsi , Simolestes vorax , Liopleurodon ferox , Pliosaurus spp. and brachauchenines.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Acta Palaeontologica Polonica
Acta Palaeontologica Polonica 地学-古生物学
CiteScore
2.80
自引率
5.60%
发文量
36
审稿时长
12.5 months
期刊介绍: Acta Palaeontologica Polonica is an international quarterly journal publishing papers of general interest from all areas of paleontology. Since its founding by Roman Kozłowski in 1956, various currents of modern paleontology have been represented in the contents of the journal, especially those rooted in biologically oriented paleontology, an area he helped establish. In-depth studies of all kinds of fossils, of the mode of life of ancient organisms and structure of their skeletons are welcome, as those offering stratigraphically ordered evidence of evolution. Work on vertebrates and applications of fossil evidence to developmental studies, both ontogeny and astogeny of clonal organisms, have a long tradition in our journal. Evolution of the biosphere and its ecosystems, as inferred from geochemical evidence, has also been the focus of studies published in the journal.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信