Redescription of the Cranium of Jingshanosaurus xinwaensis (Dinosauria: Sauropodomorpha) from the Lower Jurassic Lufeng Formation of Yunnan Province, China

doi:10.1002/ar.24113

IVPP-IR > 中科院古脊椎所（2000年以后）

	Redescription of the Cranium of Jingshanosaurus xinwaensis (Dinosauria: Sauropodomorpha) from the Lower Jurassic Lufeng Formation of Yunnan Province, China
	Zhang, Qian-Nan 1,2,3; Wang, Tao 4; Yang, Zhi-Wen 4; You, Hai-Lu1,2,3
	2020-04-01
发表期刊	ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY
ISSN	1932-8486
卷号	303 期号:4 页码:759-771
通讯作者	You, Hai-Lu(youhailu@ivpp.ac.cn)
摘要	The Lower Jurassic Lufeng Formation in Yunnan Province of southwestern China has yielded an important and diverse terrestrial vertebrate fauna dominated by basal sauropodomorph dinosaurs. Nevertheless, many of them lack detailed descriptions and/or explicit diagnoses, hampering systematic analyses of their interrelationships and further studies. We present a detailed redescription of the cranial osteology of Jingshanosaurus xinwaensis and amend its diagnosis. Incorporation of the revised anatomical data into a phylogenetic analysis finds Jingshanosaurus to be one of the earliest diverging sauropodiforms. Moreover, the previously reported Chuxiongosaurus lufengensis is considered to be a junior synonym of J. xinwaensis. Jingshanosaurus can be diagnosed by a unique combination of character states, including (1) an inflection at the base of the dorsal premaxillary process; (2) the level of the caudal margin of the external naris being caudal to the mid-length of the maxillary tooth row and the rostral margin of the antorbital fenestra; (3) a ventrally constricted subtriangular orbit; (4) the height-to-length ratio of the dentary being greater than 0.2; and (5) a distally recurved long axis of the premaxillary and rostral maxillary tooth crowns. As the largest taxon (around 9 m long) currently known among Lufeng basal sauropodomorphs and one of the best known basal-most sauropodiforms, a better understanding of Jingshanosaurus will allow for reconstruction of the ecomorphotypic diversity of the Lower Jurassic Lufeng dinosaurs and help to decipher the origin and early evolution of sauropodiforms, the clade ultimately leading to the gigantic sauropods. Anat Rec, 303:759-771, 2020. (c) 2019 Wiley Periodicals, Inc.
关键词	Jingshanosaurus sauropodomorph dinosaur lower Jurassic Lufeng formation
DOI	10.1002/ar.24113
关键词[WOS]	COLORADISAURUS-BREVIS DINOSAURIA ; PHYLOGENETIC-RELATIONSHIPS ; POSTCRANIAL ANATOMY ; SOUTH-AFRICA ; SKULL ; PROSAUROPODA ; OSTEOLOGY ; ARGENTINA ; EVOLUTION ; ORIGIN
收录类别	SCI
语种	英语
WOS研究方向	Anatomy & Morphology
WOS类目	Anatomy & Morphology
WOS记录号	WOS:000518864000009
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/17229
专题	中科院古脊椎所（2000年以后）
通讯作者	You, Hai-Lu
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, 142 Xizhimenwai St, Beijing 100044, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, 142 Xizhimenwai St, Beijing 100044, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, 19A Yiiquan Rd, Beijing 100049, Peoples R China 4.Bur Land & Resources Lufeng Cty, Lufeng 651299, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qian-Nan,Wang, Tao,Yang, Zhi-Wen,et al. Redescription of the Cranium of Jingshanosaurus xinwaensis (Dinosauria: Sauropodomorpha) from the Lower Jurassic Lufeng Formation of Yunnan Province, China[J]. ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY,2020,303(4):759-771.
APA	Zhang, Qian-Nan,Wang, Tao,Yang, Zhi-Wen,&You, Hai-Lu.(2020).Redescription of the Cranium of Jingshanosaurus xinwaensis (Dinosauria: Sauropodomorpha) from the Lower Jurassic Lufeng Formation of Yunnan Province, China.ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY,303(4),759-771.
MLA	Zhang, Qian-Nan,et al."Redescription of the Cranium of Jingshanosaurus xinwaensis (Dinosauria: Sauropodomorpha) from the Lower Jurassic Lufeng Formation of Yunnan Province, China".ANATOMICAL RECORD-ADVANCES IN INTEGRATIVE ANATOMY AND EVOLUTIONARY BIOLOGY 303.4(2020):759-771.

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