The tetrapod fauna of the upper Permian Naobaogou Formation of China: a new mid-sized pareiasaur <i>Yinshanosaurus angustus</i> and its implications for the phylogenetic relationships of pareiasaurs

doi:10.1002/spp2.70020

IVPP-IR

	*The tetrapod fauna of the upper Permian Naobaogou Formation of China: a new mid-sized pareiasaur Yinshanosaurus angustus* and its implications for the phylogenetic relationships of pareiasaurs**
	Yi, Jian 1,2,3; Liu, Jun1,2
	2025-05-01
发表期刊	PAPERS IN PALAEONTOLOGY
ISSN	2056-2799
卷号	11 期号:3 页码:21
通讯作者	Liu, Jun(liujun@ivpp.ac.cn)
摘要	Pareiasauria are a specialized clade of herbivorous tetrapods that existed throughout Pangaea during the middle-late Permian period. The phylogenetic relationships of Chinese pareiasaur species have remained controversial for several decades, primarily due to the poor preservation of the known specimens. For example, until the report of Shihtienfenia completus in 2019, no complete skull had been documented for Chinese pareiasaurs. The present study describes a mid-sized pareiasaur, Yinshanosaurus angustus gen. et sp. nov., based on a nearly complete skull and an articulated partial postcranial skeleton collected from the Naobaogou Formation in 2018. It presents several significant new morphological features such as the narrowest skull of all pareiasaurs, with skull length more than twice skull width at the lateral edges of the cheeks (quadratojugals), a forked nasal posterior projection, a notch on the tabular posterior margin, and a unique combination of characters: U-shaped paraoccipital process, snout as wide as high, long frontal with a length-to-width ratio greater than 2.0, and maxillary teeth oriented vertically. Although the phylogenetic framework of pareiasaurs still requires further refinement, the current analysis yields three distinct phylogenetic positions for the Chinese pareiasaurs and establishes a new clade including S. completus and Y. angustus.
关键词	late Permian Naobaogou Formation Pareiasauria phylogeny
DOI	10.1002/spp2.70020
关键词[WOS]	KAROO BASIN ; SUNJIAGOU FORMATION ; CRANIAL MORPHOLOGY ; ANATOMY ; SHANXI ; PARAREPTILIA ; DENTITION ; LIULIN
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Strategic Priority Research Program of Chinese Academy of Sciences
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences ; Strategic Priority Research Program of Chinese Academy of Sciences
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001501364000001
出版者	WILEY
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/24545
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Liu, Jun
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Chongqing Inst Paleontol, Chongqing 401122, Peoples R China
推荐引用方式 GB/T 7714	Yi, Jian,Liu, Jun. The tetrapod fauna of the upper Permian Naobaogou Formation of China: a new mid-sized pareiasaur Yinshanosaurus angustus and its implications for the phylogenetic relationships of pareiasaurs[J]. PAPERS IN PALAEONTOLOGY,2025,11(3):21.
APA	Yi, Jian,&Liu, Jun.(2025).The tetrapod fauna of the upper Permian Naobaogou Formation of China: a new mid-sized pareiasaur Yinshanosaurus angustus and its implications for the phylogenetic relationships of pareiasaurs.PAPERS IN PALAEONTOLOGY,11(3),21.
MLA	Yi, Jian,et al."The tetrapod fauna of the upper Permian Naobaogou Formation of China: a new mid-sized pareiasaur Yinshanosaurus angustus and its implications for the phylogenetic relationships of pareiasaurs".PAPERS IN PALAEONTOLOGY 11.3(2025):21.