The tetrapod fauna of the upper Permian Naobaogou Formation of China: 7. Laosuchus hun sp. nov. (Chroniosuchia) and interrelationships of chroniosuchians

doi:10.1080/14772019.2021.1873435

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	The tetrapod fauna of the upper Permian Naobaogou Formation of China: 7. Laosuchus hun sp. nov. (Chroniosuchia) and interrelationships of chroniosuchians
	Liu, Jun 1,2,3; Chen, Jianye 3
刊名	JOURNAL OF SYSTEMATIC PALAEONTOLOGY
	2021-01-18
卷号	18 期号:24 页码:2043-2058
关键词	Reptiliomorpha Chroniosuchia Chroniosuchidae palaeobiogeography phylogeny
ISSN号	1477-2019
DOI	10.1080/14772019.2021.1873435
通讯作者	Liu, Jun(liujun@ivpp.ac.cn)
英文摘要	Chroniosuchians were the only clade of non-amniotic reptiliomorphs that survived into the Triassic. Recent discoveries have increased their species and anatomical diversity and expanded their distribution in time and space. Most species were represented only by osteoderms, and complete or articulated remains are rare. Here we report a partial skull with a mandible and associated postcranial skeleton from the Naobaogou Formation in the Daqingshan, Nei Mongol, China. It is referred to Laosuchus based on the absence of a preorbital fenestra, the presence of a well-developed transverse flange of the pterygoid that contacts the maxilla, an internal crest on and above the dorsal side of the palate (vomer, ectopterygoid and pterygoid), a shallow otic notch formed by the tabular horn and the posterior part of the squamosal, a thin and high ventromedial ridge on the parasphenoid; the surangular dorsal surface forming a fossa for the insertion of the external adductors, the maxilla and quadratojugal separated by the jugal, and a jugal with a ventral (alary) process bordering the subtemporal fenestra. A new species, L. hun, is established based on its palatal dentition that is reduced, with but a few denticles on the vomer and pterygoid, and an irregular posterior cheek margin. Laosuchus can be referred to Chroniosuchidae based on cranial features, and the divergence of the Chroniosuchidae and Bystrowianidae is confirmed in this study. New findings reinforce the hypothesis of the migration route from North China to Laos in the late Permian.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41572019]
WOS研究方向	Evolutionary Biology ; Paleontology
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000618304500001
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/18676]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Liu, Jun
作者单位	1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 3.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	Liu, Jun,Chen, Jianye. The tetrapod fauna of the upper Permian Naobaogou Formation of China: 7. Laosuchus hun sp. nov. (Chroniosuchia) and interrelationships of chroniosuchians[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2021,18(24):2043-2058.
APA	Liu, Jun,&Chen, Jianye.(2021).The tetrapod fauna of the upper Permian Naobaogou Formation of China: 7. Laosuchus hun sp. nov. (Chroniosuchia) and interrelationships of chroniosuchians.JOURNAL OF SYSTEMATIC PALAEONTOLOGY,18(24),2043-2058.
MLA	Liu, Jun,et al."The tetrapod fauna of the upper Permian Naobaogou Formation of China: 7. Laosuchus hun sp. nov. (Chroniosuchia) and interrelationships of chroniosuchians".JOURNAL OF SYSTEMATIC PALAEONTOLOGY 18.24(2021):2043-2058.