A Small Short-Necked Hupehsuchian from the Lower Triassic of Hubei Province, China

doi:10.1371/journal.pone.0115244

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	A Small Short-Necked Hupehsuchian from the Lower Triassic of Hubei Province, China
	Chen, Xiao-hong 6; Motani, Ryosuke 1; Cheng, Long ; Jiang, Da-yong ; Rieppel, Olivier 4
刊名	PLOS ONE
	2014
卷号	9 期号:12 页码:-
ISSN号	1932-6203
DOI	10.1371/journal.pone.0115244
英文摘要	Hupehsuchia is a group of enigmatic Triassic marine reptiles that is known exclusively from two counties in Hubei Province, China. One of the common features of the group was a modestly long neck with nine to ten cervical vertebrae. We report a new species of Hupehsuchia, Eohupehsuchus brevicollis gen. et sp. nov., which for the first time shows a short neck in this group, with six cervicals. The configuration of the skull roof in Eohupehsuchus is also unique among Hupehsuchia, with narrow frontals and posteriorly shifted parietals, warranting recognition of a new species. The taxon superficially resembles Nanchangosaurus in retaining hupehsuchian plesiomorphies, such as low neural spines and small body size. However, its limbs are well-developed, unlike in Nanchangosaurus, although the latter genus is marginally larger in body length. Thus, the individual is unlikely to be immature. Also, Eohupehsuchus shares a suite of synapomorphies with Hupehsuchus, including the second and third layers of dermal ossicles above the dorsal neural spines. A phylogenetic analysis suggests that the new species is not the most basal hupehsuchian despite its short neck, and instead forms the sister taxon of Hupehsuchidae. Until recently, Hupehsuchia contained only two monotypic genera. Now there are at least four genera among Hupehsuchia, and the undescribed diversity is even higher. The left forelimb of the only specimen is incomplete, ending with broken phalanges distally. The breakage could only have occurred pre-burial. The individual may have been attacked by a predator and escaped, given that scavenging is unlikely.
学科主题	古生物学
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000347215600056
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40282]
专题	中国地质调查局武汉地质调查中心
作者单位	1.Wuhan Ctr China Geol Survey, Wuhan 430023, Hubei, Peoples R China 2.Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA 3.Peking Univ, Lab Orogen Belt & Crustal Evolut, MOE, Dept Geol, Beijing 100871, Peoples R China 4.Peking Univ, Geol Museum, Beijing 100871, Peoples R China 5.Field Museum, Ctr Integrat Res, Chicago, IL 60605 USA 6.中国地质调查局武汉地质调查中心
推荐引用方式 GB/T 7714	Chen, Xiao-hong,Motani, Ryosuke,Cheng, Long,et al. A Small Short-Necked Hupehsuchian from the Lower Triassic of Hubei Province, China[J]. PLOS ONE,2014,9(12):-.
APA	Chen, Xiao-hong,Motani, Ryosuke,Cheng, Long,Jiang, Da-yong,&Rieppel, Olivier.(2014).A Small Short-Necked Hupehsuchian from the Lower Triassic of Hubei Province, China.PLOS ONE,9(12),-.
MLA	Chen, Xiao-hong,et al."A Small Short-Necked Hupehsuchian from the Lower Triassic of Hubei Province, China".PLOS ONE 9.12(2014):-.