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

文献类型：期刊论文

作者Hao Baoqiao2; Zhang Qiannan1,3,4; Peng Guangzhao2; Ye Yong2; You Hailu1,3,4
刊名ACTA GEOLOGICA SINICA-ENGLISH EDITION
出版日期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
DOI10.1111/1755-6724.13535
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.
WOS关键词PHYLOGENETIC-RELATIONSHIPS ; ORNITHISCHIA ; PROVINCE
资助项目Zigong Dinosaur Museum curator foundation
WOS研究方向Geology
语种英语
WOS记录号WOS:000437257000001
出版者WILEY
资助机构Zigong Dinosaur Museum curator foundation
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.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
2.Zigong Dinosaur Museum, Zigong 643013, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, 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.

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