Redescription of Gigantspinosaurus sichuanensis (Dinosauria, Stegosauria) from the Late Jurassic of Sichuan, Southwestern China

doi:10.1111/1755-6724.13535

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	Redescription of Gigantspinosaurus sichuanensis (Dinosauria, Stegosauria) from the Late Jurassic of Sichuan, Southwestern China
	Hao Baoqiao 1; Zhang Qiannan 2,3,4; Peng Guangzhao 1; Ye Yong 1; You Hailu 2,3,4
刊名	ACTA GEOLOGICA SINICA-ENGLISH EDITION
	2018-04-01
卷号	92 期号:2 页码:431-441
关键词	Gigantspinosaurus Sichuan basin systematics transitional type adult individual
ISSN号	1000-9515
DOI	10.1111/1755-6724.13535
通讯作者	Hao Baoqiao(haobaoqiao1984@163.com)
英文摘要	Gigantspinosaurus sichuanensis is one of the six Stegosauria genera discovered from the Sichuan basin, which preserves the first skin impressions of stegosaurs around the world and a huge pair of 'comma' -shaped parascapular spines kept in situ, and being named after the latter feature. The holotype was firstly named and reported in an abstract of a lecture by Ouyang, 1992, since when it has never been detailed studied and the taxonomic position of Gigantspinosaurus is also vague. The morphological redescription shows that G. sichuanensis is a medium-sized stegosaur, with external mandibular foramen developed. The ratio of femur to humerus is large, and the intersacral fenestrae are big. According to the wear degree of teeth, the holotype of G. sichuanensis is regarded as an adult individual. On the basis of the recent data matrix of stegosaurs and the characters revisions of G. sichuanensis, its phylogenetic position has been determined again. By our detailed morphological and phylogenetic analysis, G. sichuanensis is considered to inherit some primitive traits, but it is more derived than Huayangosaurus, and located in a transitional position between Huayangosaurus and Tuojiangosaurus, as a kind of evolved stegosaurs. The ancestors of Stegosauria are small and quadruped, with primitive ornithopod-like skull, and grow leaf-shaped teeth, a large number of bone plates.
资助项目	Zigong Dinosaur Museum curator foundation
WOS关键词	PHYLOGENETIC-RELATIONSHIPS ; ORNITHISCHIA ; PROVINCE
WOS研究方向	Geology
语种	英语
出版者	WILEY
WOS记录号	WOS:000437257000001
资助机构	Zigong Dinosaur Museum curator foundation
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/16728]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Hao Baoqiao
作者单位	1.Zigong Dinosaur Museum, Zigong 643013, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hao Baoqiao,Zhang Qiannan,Peng Guangzhao,et al. Redescription of Gigantspinosaurus sichuanensis (Dinosauria, Stegosauria) from the Late Jurassic of Sichuan, Southwestern China[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2018,92(2):431-441.
APA	Hao Baoqiao,Zhang Qiannan,Peng Guangzhao,Ye Yong,&You Hailu.(2018).Redescription of Gigantspinosaurus sichuanensis (Dinosauria, Stegosauria) from the Late Jurassic of Sichuan, Southwestern China.ACTA GEOLOGICA SINICA-ENGLISH EDITION,92(2),431-441.
MLA	Hao Baoqiao,et al."Redescription of Gigantspinosaurus sichuanensis (Dinosauria, Stegosauria) from the Late Jurassic of Sichuan, Southwestern China".ACTA GEOLOGICA SINICA-ENGLISH EDITION 92.2(2018):431-441.