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Osteology of Dashanpusaurus dongi (Sauropoda: Macronaria) and new evolutionary evidence from Middle Jurassic Chinese sauropods

文献类型：期刊论文

作者Ren, Xin-Xin8; Jiang, Shan5,6,7; Wang, Xu-Ri8; Peng, Guang-Zhao5,6,7; Ye, Yong5,6,7; King, Logan4; You, Hai-Lu1,2,3
刊名JOURNAL OF SYSTEMATIC PALAEONTOLOGY
出版日期2022-12-31
卷号20期号:1页码:72
ISSN号1477-2019
关键词Sauropoda Neosauropoda Macronaria Dashanpusaurus dongi Middle Jurassic lower Shaximiao Formation
DOI10.1080/14772019.2022.2132886
通讯作者You, Hai-Lu(youhailu@ivpp.ac.cn)
英文摘要The Middle Jurassic lower Shaximiao Formation in Sichuan Province of south-western China has yielded a diverse terrestrial vertebrate fauna dominated by sauropod dinosaurs. However, many of these sauropods lack detailed descriptions or explicit phylogenetic diagnoses. Here, we present a comprehensive redescription of Dashanpusaurus dongi, a species of sauropod found only in the lower Shaximiao Formation. We define the revised autapomorphies of the species as follows: neural canals are sub-square in anterior dorsal vertebrae; the presence of a thin accessory lamina that contacts the prezygodiapophyseal and paradiapophyseal laminae of the middle dorsals, forming an angle of 75 degrees to the horizontal; and four ridges on the anterodistal edge of the humerus. Often considered part of the epipophyseal-prezygapophyseal lamina, a strut invades the spinodiapophyseal fossa in the cervical and anterior dorsal vertebrae. Anatomical comparisons indicate that this feature was widespread among early-diverging Middle Jurassic eusauropod lineages. This comparative anatomical data provides an opportunity to revisit the phylogenetic position of Dashanpusaurus and the relationships of the neosauropod clade. Recovered as a macronarian, a better understanding of Dashanpusaurus dongi will allow for clarification of the origin, early evolution, and palaeogeographical distribution of neosauropods. This study also suggests that the diversity and dispersity of the neosauropod clade occurred much earlier than previously realized.
WOS关键词PHYLOGENETIC-RELATIONSHIPS ; DINOSAURIA SAUROPODA ; SP-NOV ; YUNNAN PROVINCE ; FORELAND BASIN ; SICHUAN BASIN ; U-PB ; ANATOMY ; PATAGONIA ; REVISION
资助项目Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[42288201] ; National Natural Science Foundation of China[42102018] ; National Natural Science Foundation of China[41872021] ; China Geological Survey[DD20221649]
WOS研究方向Evolutionary Biology ; Paleontology
语种英语
出版者TAYLOR & FRANCIS LTD
WOS记录号WOS:000889505900001
资助机构Chinese Academy of Sciences ; National Natural Science Foundation of China ; China Geological Survey
源URL[http://119.78.100.205/handle/311034/22086]  
专题古脊椎动物与古人类研究所_图书馆1
通讯作者You, Hai-Lu
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironment, Beijing 100044, Peoples R China
3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
4.Univ Bristol, Sch Earth Sci, Queens Rd, Bristol BS8 1RJ, England
5.Key Lab Paleontol & Paleoenvironment Coevolut Sich, Zigong 643013, Peoples R China
6.Zigong Dinosaur Museum, Res Ctr Jurass Stratig & Paleontol, Zigong 643013, Peoples R China
7.Zigong Dinosaur Museum, Zigong 643013, Peoples R China
8.Chinese Acad Geol Sci, Inst Geol, Key Lab Stratig & Paleontol, Minist Nat Resources, Beijing 100037, Peoples R China
推荐引用方式
GB/T 7714		 Ren, Xin-Xin,Jiang, Shan,Wang, Xu-Ri,et al. Osteology of Dashanpusaurus dongi (Sauropoda: Macronaria) and new evolutionary evidence from Middle Jurassic Chinese sauropods[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2022,20(1):72.
APA Ren, Xin-Xin.,Jiang, Shan.,Wang, Xu-Ri.,Peng, Guang-Zhao.,Ye, Yong.,...&You, Hai-Lu.(2022).Osteology of Dashanpusaurus dongi (Sauropoda: Macronaria) and new evolutionary evidence from Middle Jurassic Chinese sauropods.JOURNAL OF SYSTEMATIC PALAEONTOLOGY,20(1),72.
MLA Ren, Xin-Xin,et al."Osteology of Dashanpusaurus dongi (Sauropoda: Macronaria) and new evolutionary evidence from Middle Jurassic Chinese sauropods".JOURNAL OF SYSTEMATIC PALAEONTOLOGY 20.1(2022):72.

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