A new Early Jurassic dinosaur represents the earliest-diverging and oldest sauropodomorph of East Asia

doi:10.1038/s41598-025-12185-2

IVPP-IR

	A new Early Jurassic dinosaur represents the earliest-diverging and oldest sauropodomorph of East Asia
	Wang, Ya-Ming 1; Zhang, Qian-Nan 2,3; Wang, Yan-Chao 2,3; Xu, Huan 4,5; Chen, Jianbo 4,6; Feng, Zhuo 4,6,7; Xu, Xing2,7,8 ; Wang, Tao 9; You, Hai-Lu2,3
	2025-07-23
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	15 期号:1 页码:10
通讯作者	Wang, Ya-Ming(yaming21@hotmail.com) ; Zhang, Qian-Nan(zhangqiannan@ivpp.ac.cn) ; You, Hai-Lu(youhailu@ivpp.ac.cn)
摘要	A new dinosaur assemblage from the Lower Jurassic at Wande Town, Wuding County, Yunnan Province, China is discovered recently. Here a new sauropodomorph from this site, Wudingloong wui gen. et sp. nov., is described on the basis of a partial skeleton. Wudingloong is different from other non-sauropodiform sauropodomorphs particularly in having an ascending ramus of the maxilla excavated by triangular antorbital fossa, distinct ventral keel on the middle cervical centra, a slender humerus with a flat and low humeral head, a gracile metacarpal V with the proximal end as wide as the distal end, and a large and robust ungual of manual digit I. Wudingloong was excavated from the lowest Lower Jurassic Yubacun Formation, which is the lowest dinosaur bone bed in East Asia. Both the phylogenetic analysis and stratigraphic horizon indicate that Wudingloong represents the earliest-diverging and stratigraphically oldest sauropodomorph dinosaur discovered in East Asia so far. The discovery of this new taxon provides further evidence that the southwestern China sauropodomorph assemblage is one of the most taxonomically diverse and morphologically disparate in the pre-Toarcian Early Jurassic worldwide, represented by various taxa from near the base of the Massopoda to non-sauropodan sauropodiforms.
DOI	10.1038/s41598-025-12185-2
关键词[WOS]	COLORADISAURUS-BREVIS DINOSAURIA ; PHYLOGENETIC-RELATIONSHIPS ; POSTCRANIAL ANATOMY ; SKULL ; EVOLUTION ; BASIN ; MELANOROSAURUS ; PROSAUROPODA ; AFRICA ; YUNNAN
收录类别	SCI
语种	英语
资助项目	the National Natural Science Foundation of China[42002014] ; the National Natural Science Foundation of China[42288201] ; the National Natural Science Foundation of China[42372030] ; National Natural Science Foundation of China[5224037] ; Beijing Natural Science Foundation[213126] ; State Key Laboratory of Palaeobiology and Stratigraphy of the Nanjing Institute of Geology and Palaeontology[XDB26000000] ; Strategic Priority Research Programme of the Chinese Academy of Sciences[202305AB350006] ; Yunnan Revitalization Talent Support Program
项目资助者	the National Natural Science Foundation of China ; National Natural Science Foundation of China ; Beijing Natural Science Foundation ; State Key Laboratory of Palaeobiology and Stratigraphy of the Nanjing Institute of Geology and Palaeontology ; Strategic Priority Research Programme of the Chinese Academy of Sciences ; Yunnan Revitalization Talent Support Program
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001535287200035
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/311034/24420
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Wang, Ya-Ming; Zhang, Qian-Nan; You, Hai-Lu
作者单位	1.Geol Museum China, Beijing 100034, Peoples R China 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 4.Yunnan Univ, Yunnan Key Lab Earth Syst Sci, Kunming 650500, Peoples R China 5.Yunnan Univ, Sch Earth Sci, Kunming 650500, Peoples R China 6.Yunnan Univ, Inst Palaeontol, Yunnan Key Lab Palaeobiol, Kunming 650500, Peoples R China 7.Southwest United Grad Sch, Kunming 650092, Peoples R China 8.Yunnan Univ, Ctr Vertebrate Evolutionary Biol, Kunming 650091, Peoples R China 9.Bur Nat Resources Lufeng City, Ctr Dinosaur Res & Protect, Lufeng, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Wang, Ya-Ming,Zhang, Qian-Nan,Wang, Yan-Chao,et al. A new Early Jurassic dinosaur represents the earliest-diverging and oldest sauropodomorph of East Asia[J]. SCIENTIFIC REPORTS,2025,15(1):10.
APA	Wang, Ya-Ming.,Zhang, Qian-Nan.,Wang, Yan-Chao.,Xu, Huan.,Chen, Jianbo.,...&You, Hai-Lu.(2025).A new Early Jurassic dinosaur represents the earliest-diverging and oldest sauropodomorph of East Asia.SCIENTIFIC REPORTS,15(1),10.
MLA	Wang, Ya-Ming,et al."A new Early Jurassic dinosaur represents the earliest-diverging and oldest sauropodomorph of East Asia".SCIENTIFIC REPORTS 15.1(2025):10.