New evidence for the earliest ornithischian dinosaurs from Asia

doi:10.1016/j.isci.2024.111641

IVPP-IR

	New evidence for the earliest ornithischian dinosaurs from Asia
	Yao, Xi 1; Zhao, Qi 2,3; Ren, Tingcong 4; Wei, Guangbiao 5; Xu, Xing1,2
	2025-01-17
发表期刊	ISCIENCE
卷号	28 期号:1 页码:13
通讯作者	Yao, Xi(yaoxi@ynu.edu.cn) ; Wei, Guangbiao(elephantfossil@aliyun.com)
摘要	The Early Jurassic ornithischian dinosaurs in Laurasia are dominated by armored dinosaurs, with other early ornithischian groups being rare. Here, a new taxon, Archaeocursor asiaticus gen. et sp. nov., is reported from the Lower Jurassic of southwestern China. Phylogenetic analysis places Archaeocursor asiaticus as the earliest-diverging ornithischian dinosaur yet discovered in Asia, albeit with weak support. Osteohistological analysis of the femoral cross-section suggests that Archaeocursor asiaticus was a young adult at the time of death, indicating a small body size of approximately 1 m in body length. This discovery extends the known presence of ornithischian dinosaurs in East Asia to the Pliensbachian or even late Sinemurian stages. Additionally, it points to an earlier dispersal event of Early Jurassic ornithischian dinosaurs from Gondwana to Laurasia, including East Asia, which appears to be independent of, and possibly earlier than, the dispersal of armored dinosaurs.
DOI	10.1016/j.isci.2024.111641
关键词[WOS]	POSTCRANIAL ANATOMY ; ZILIUJING FORMATION ; THEROPOD TRACKS ; SOUTHERN AFRICA ; SICHUAN ; DIVERSIFICATION ; PHYLOGENY ; SPECIMENS ; FOSSILS
收录类别	SCI
语种	英语
资助项目	Yunnan Revitalization Talent Support Program[202305AB350006] ; National Natural Science Foundation of China[42288201]
项目资助者	Yunnan Revitalization Talent Support Program ; 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:001407786100001
出版者	CELL PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24274
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Yao, Xi; Wei, Guangbiao
作者单位	1.Yunnan Univ, Ctr Vertebrate Evolutionary Biol, Kunming 650091, Peoples R China 2.Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 4.Chongqing Bur Geol & Minerals Explorat, Southeast Sichuan Geol Team, Chongqing 400038, Peoples R China 5.Chongqing Inst Paleontol, Chongqing 401122, Peoples R China
推荐引用方式 GB/T 7714	Yao, Xi,Zhao, Qi,Ren, Tingcong,et al. New evidence for the earliest ornithischian dinosaurs from Asia[J]. ISCIENCE,2025,28(1):13.
APA	Yao, Xi,Zhao, Qi,Ren, Tingcong,Wei, Guangbiao,&Xu, Xing.(2025).New evidence for the earliest ornithischian dinosaurs from Asia.ISCIENCE,28(1),13.
MLA	Yao, Xi,et al."New evidence for the earliest ornithischian dinosaurs from Asia".ISCIENCE 28.1(2025):13.