Early Miocene fossils from Shaoma, China, evidence Eurasia-North America ruminant exchange

doi:10.1016/j.geobios.2025.06.002

IVPP-IR

	Early Miocene fossils from Shaoma, China, evidence Eurasia-North America ruminant exchange
	Wang, Shi-Qi1 ; Deng, Tao1,2 ; Peng, Tingjiang 3; Wang, Bian 1,2; Jiangzuo, Qigao 1,2; Fu, Jiao 1,2; Sun, Danhui 1,2; Xing, Luda 1,2
	2025-12-01
发表期刊	GEOBIOS
ISSN	0016-6995
卷号	93 页码:99-115
通讯作者	Wang, Shi-Qi(wangshiqi@ivpp.ac.cn)
摘要	Stem pecorans radiated globally near the Oligocene-Miocene boundary but remain poorly documented in China. We report a new stem pecorans, Labrangomeryx dorcapolis nov. gen., nov. sp. and previously reported Sinopalaeoceros xiejiaensis, from the earliest Miocene (similar to 23-20 Ma) of Gansu, China. Labrangomeryx nov. gen. exhibits bunoselenodont dentition with unique traits: a bifurcated p4 anterior conid, strong metastylids, and absent entoconulid in molars, linking Eurasian and North American taxa (e.g., Pomelomeryx, Problastomeryx). Sinopalaeoceros displays high hypsodonty and m3 entoconulid, resembling North American merycodontines rather than later Asian bovids. Both taxa lack cranial appendages, pointing towards a placement within stem pecorans. An enigmatic large p4 may present a tylopodan affinity, implying North American ties. These findings reveal early pecoran diversification in Eastern Asia and underscore transcontinental faunal exchanges during the early Miocene, bridging Eurasian and North American evolutionary narratives. The absence of crown-family cranial features highlights unresolved systematic positions but enriches understanding of pecoran morphological plasticity during their initial radiation. (c) 2025 Elsevier Masson SAS. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
关键词	Pecoran New genus and species Phylogeny Xiejian Hezuo Basin Tibetan Plateau
DOI	10.1016/j.geobios.2025.06.002
关键词[WOS]	ARTIODACTYLA ; OLIGOCENE ; MAMMALIA ; ASSEMBLAGE ; EVOLUTION ; BASIN
收录类别	SCI
语种	英语
资助项目	Program of China[2023YFF0804501]###3617 ; National Natural Science Foundation of China[42430207]###3143 ; National Natural Science Foundation of China[42472004]###3250
项目资助者	Program of China ; National Natural Science Foundation of China
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001642366000001
出版者	ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/25273
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Wang, Shi-Qi
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, Beijing 100049, Peoples R China 3.Lanzhou Univ, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shi-Qi,Deng, Tao,Peng, Tingjiang,et al. Early Miocene fossils from Shaoma, China, evidence Eurasia-North America ruminant exchange[J]. GEOBIOS,2025,93:99-115.
APA	Wang, Shi-Qi.,Deng, Tao.,Peng, Tingjiang.,Wang, Bian.,Jiangzuo, Qigao.,...&Xing, Luda.(2025).Early Miocene fossils from Shaoma, China, evidence Eurasia-North America ruminant exchange.GEOBIOS,93,99-115.
MLA	Wang, Shi-Qi,et al."Early Miocene fossils from Shaoma, China, evidence Eurasia-North America ruminant exchange".GEOBIOS 93(2025):99-115.