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

doi:10.1038/s41598-025-29995-z

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	A new mamenchisaurid sauropod dinosaur from the upper jurassic of Southwest China reveals new evolutionary evidence from East Asian eusauropods
	Dai, Hui 1,3; Hu, Xu-Feng 2,3; Tan, Chao 1,3; Ren, Xin-Xin 4; Ma, Qing-Yu 1,3; Wei, Guang-Biao 1,3; You, Hai-Lu5,6,7
	2025-11-25
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	15 期号:1 页码:15
通讯作者	Tan, Chao(735137629@qq.com) ; Ren, Xin-Xin(laotourenxin@126.com)
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.
关键词	Dinosauria Sauropoda Eusauropoda Mamenchisauridae Late Jurassic China
DOI	10.1038/s41598-025-29995-z
关键词[WOS]	MORRISON FORMATION ; PHYLOGENETIC-RELATIONSHIPS ; NORTHWESTERN PATAGONIA ; NEUQUEN PROVINCE ; YUNNAN PROVINCE ; OSTEOLOGY ; RECORD ; REASSESSMENT ; MACRONARIA ; SEPARATION
收录类别	SCI
语种	英语
资助项目	the China Geological Survey[DD20250102605]###3559 ; Natural Science Foundation of Chongqing[cstc2021jcyj-msxmx1117]###3560 ; he Youth Talent Programme of the Chinese Academy of Geological Sciences[JKYQN202320]###3561 ; the National Natural Science Foundation of China[42472020]###3562
项目资助者	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
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001632771200001
出版者	NATURE PORTFOLIO
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/25126
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 Inst Paleontol, Chongqing, Peoples R China 2.Chongqing Bur Geol & Mineral Resource Explorat & D, 208 Hydrogeol & Engn Geol Team, 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.