New material of a non-averostran neotheropod dinosaur from the Lower Jurassic Lufeng Formation of Yunnan, south-western China

doi:10.1093/zoolinnean/zlaf034

IVPP-IR

	New material of a non-averostran neotheropod dinosaur from the Lower Jurassic Lufeng Formation of Yunnan, south-western China
	Li, Hongqing 1,2; Xing, Xu 1,5; Jiang, Juan 1; Liu, Jianrong 3; Brusatte, Stephen L.4; Bi, Shundong 1,6
	2025-05-01
发表期刊	ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
ISSN	0024-4082
卷号	204 期号:1 页码:29
通讯作者	Brusatte, Stephen L.(Stephen.Brusatte@ed.ac.uk) ; Bi, Shundong(shundong.bi@iup.edu)
摘要	Neotheropoda is the core clade of predatory dinosaurs that originated in the Triassic and became highly diversified and globally distributed by the Early Jurassic. Currently, six species of Neotheropoda have been described from Early Jurassic localities in Yunnan Province, south-western China. Here we describe a new specimen from the Lufeng Formation in central Yunnan, representing a non-coelophysoid, non-averostran neotheropod. Osteohistological analysis indicates the immaturity of the specimen. Computed tomography scans reveal the internal morphology of trunk vertebrae, implying a more developed postcranial skeletal pneumaticity in averostran-line neotheropods than previously thought. Phylogenetic analysis finds the new specimen as the closest sister-taxon to Averostra (Ceratosauria + Tetanurae). It does not form a unique subclade with the previously described Lufeng Formation taxa Shuangbaisaurus anlongbaoensis and Sinosaurus triassicus. Instead, Sh. anlongbaoensis and Si. triassicus are found as sister-taxa, indicating that the former may be a subjective junior synonym of the latter. Although the new specimen has a unique combination of character states, and a potential autapomorphy, we conservatively refrain from establishing a new taxon, due to its immature status and the lack of information on postcranial anatomy in other Yunnan theropods. Regardless, this specimen bridges a morphological gap between non-averostran and averostran theropods.
关键词	Averostra Dinosauria Yunnan Lufeng Formation phylogeny Theropoda
DOI	10.1093/zoolinnean/zlaf034
关键词[WOS]	MAJUNGASAURUS-CRENATISSIMUS THEROPODA ; EARLY EVOLUTION ; TENDAGURU SAUROPODS ; CRESTED THEROPOD ; PNEUMATICITY ; SKELETON ; GROWTH ; HISTOLOGY ; ANATOMY ; ORIGIN
收录类别	SCI
语种	英语
资助项目	Yunnan Revitalization Talent Support Program[202305AB350006] ; The 14th Scientific Research and Innovation Project of Yunnan University[KC-22222852] ; The 14th Scientific Research and Innovation Project of Yunnan University[KC-22223218]
项目资助者	Yunnan Revitalization Talent Support Program ; The 14th Scientific Research and Innovation Project of Yunnan University
WOS研究方向	Zoology
WOS类目	Zoology
WOS记录号	WOS:001498139900001
出版者	OXFORD UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24565
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Brusatte, Stephen L.; Bi, Shundong
作者单位	1.Yunnan Univ, Ctr Vertebrate Evolutionary Biol, Sch Lifesci, Kunming 650504, Peoples R China 2.Yunnan Univ, Sch Ecol & Environm Sci, Kunming 650504, Peoples R China 3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100024, Peoples R China 4.Lufeng Dinosaur Museum, Chuxiong 651299, Peoples R China 5.Univ Edinburgh, Sch Geosci, Edinburgh EH9 3FF, Scotland 6.Indiana Univ Penn, Dept Biol, Indiana, PA 15705 USA
推荐引用方式 GB/T 7714	Li, Hongqing,Xing, Xu,Jiang, Juan,et al. New material of a non-averostran neotheropod dinosaur from the Lower Jurassic Lufeng Formation of Yunnan, south-western China[J]. ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY,2025,204(1):29.
APA	Li, Hongqing,Xing, Xu,Jiang, Juan,Liu, Jianrong,Brusatte, Stephen L.,&Bi, Shundong.(2025).New material of a non-averostran neotheropod dinosaur from the Lower Jurassic Lufeng Formation of Yunnan, south-western China.ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY,204(1),29.
MLA	Li, Hongqing,et al."New material of a non-averostran neotheropod dinosaur from the Lower Jurassic Lufeng Formation of Yunnan, south-western China".ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY 204.1(2025):29.