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A new mamenchisaurid sauropod dinosaur from the upper jurassic of Southwest China reveals new evolutionary evidence from East Asian eusauropods

文献类型：期刊论文

作者Dai, Hui2,3; Hu, Xu-Feng1,3; Tan, Chao2,3; Ren, Xin-Xin4; Ma, Qing-Yu2,3; Wei, Guang-Biao2,3; You, Hai-Lu5,6,7
刊名SCIENTIFIC REPORTS
出版日期2025-11-25
卷号15期号:1页码:15
关键词Dinosauria Sauropoda Eusauropoda Mamenchisauridae Late Jurassic China
ISSN号2045-2322
DOI10.1038/s41598-025-29995-z
通讯作者Tan, Chao(735137629@qq.com) ; Ren, Xin-Xin(laotourenxin@126.com)
英文摘要East Asian non-neosauropodan eusauropods have been central to the study of the evolution of Middle to Late Jurassic sauropod dinosaurs. Despite their remarkable diversity, the fragmentary condition of many taxa and the insufficiency of phylogenetic data for many specimens have hindered the study of continental-scale paleobiogeographic relationships. We described a new mamenchisaurid, Mamenchisaurus sanjiangensis sp. nov., based on a single partial skeleton from the early Oxfordian fossil site of Chongqing (Southwest China). M. sanjiangensis phylogenetically recovered as a diverged mamenchisaurid, shares a relatively near relationship with most other Mamenchisaurus. This new taxon is supported by an exclusive combination of characters that highlights strong convergences with members of the neosauropods. That indicates the niche overlap further enhances the competition between mamenchisaurids and neosauropods. Mamenchisaurids potentially developed a strategy to maintain dominance in East Asia before the recoupling of the East Asian and European sub-plates in the Early Cretaceous.
WOS关键词MORRISON FORMATION ; PHYLOGENETIC-RELATIONSHIPS ; NORTHWESTERN PATAGONIA ; NEUQUEN PROVINCE ; YUNNAN PROVINCE ; OSTEOLOGY ; RECORD ; REASSESSMENT ; MACRONARIA ; SEPARATION
资助项目the China Geological Survey[DD20250102605] ; Natural Science Foundation of Chongqing[cstc2021jcyj-msxmx1117] ; he Youth Talent Programme of the Chinese Academy of Geological Sciences[JKYQN202320] ; the National Natural Science Foundation of China[42472020]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:001632771200001
出版者NATURE PORTFOLIO
资助机构the China Geological Survey ; Natural Science Foundation of Chongqing ; he Youth Talent Programme of the Chinese Academy of Geological Sciences ; the National Natural Science Foundation of China
源URL[http://119.78.100.205/handle/311034/25125]  
专题中国科学院古脊椎动物与古人类研究所
通讯作者Tan, Chao; Ren, Xin-Xin
作者单位1.Chongqing Bur Geol & Mineral Resource Explorat & D, 208 Hydrogeol & Engn Geol Team, Chongqing, Peoples R China
2.Chongqing Inst Paleontol, Chongqing, Peoples R China
3.Chongqing Key Lab Paleontol & Paleoenvironment Coe, Chongqing, Peoples R China
4.Chinese Acad Geol Sci, Inst Geol, Key Lab Stratig & Paleontol, Minist Nat Resources, Beijing, Peoples R China
5.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China
6.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironment, Beijing, Peoples R China
7.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Dai, Hui,Hu, Xu-Feng,Tan, Chao,et al. A new mamenchisaurid sauropod dinosaur from the upper jurassic of Southwest China reveals new evolutionary evidence from East Asian eusauropods[J]. SCIENTIFIC REPORTS,2025,15(1):15.
APA Dai, Hui.,Hu, Xu-Feng.,Tan, Chao.,Ren, Xin-Xin.,Ma, Qing-Yu.,...&You, Hai-Lu.(2025).A new mamenchisaurid sauropod dinosaur from the upper jurassic of Southwest China reveals new evolutionary evidence from East Asian eusauropods.SCIENTIFIC REPORTS,15(1),15.
MLA Dai, Hui,et al."A new mamenchisaurid sauropod dinosaur from the upper jurassic of Southwest China reveals new evolutionary evidence from East Asian eusauropods".SCIENTIFIC REPORTS 15.1(2025):15.

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来源：古脊椎动物与古人类研究所

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