A new rhinocerotoid (Mammalia, Perissodactyla) from the early Oligocene of Ningdong, China, and its phylogenetic implications

doi:10.1007/s10914-025-09791-2

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	A new rhinocerotoid (Mammalia, Perissodactyla) from the early Oligocene of Ningdong, China, and its phylogenetic implications
	Lu, Xiaokang 1; Deng, Tao2,3 ; Sun, Boyang 2; Sun, Danhui 2; Li, Shijie 2,3
	2026-01-27
发表期刊	JOURNAL OF MAMMALIAN EVOLUTION
ISSN	1064-7554
卷号	32 期号:4 页码:13
通讯作者	Deng, Tao(dengtao@ivpp.ac.cn)
摘要	The phylogenetic relationships of Eggysodon and Hyracodon have been debated for over a century. We describe a new species, Allacerops ningdongica sp. nov., based on a mandible from the early Oligocene sandstone of the Qingshuiying Formation, Ningdong Town, Northwest China. This specimen is characterized by the presence of all three incisors, a large canine, a U-shaped outline of the trigonid, and a nearly straight protolophid of lower premolars p3 and p4. Our parsimony analysis supports the revalidation of the subfamily Allaceropinae and confirms that Allaceropinae and Eggysodontinae are not synonymous. Furthermore, our analysis unites these two subfamilies, as well as Hyracodontinae, within the family Hyracodontidae. The specimens previously identified as Eggysodon gaudryi from the early Oligocene of Moissac, France, should be assigned to Allacerops due to the presence of all three incisors and a large canine, and "Allacerops" minor from the Oligocene of Tata-Gol and Ulan Ganga, Mongolia seems to be closely affiliated with Eggysodon.
关键词	Allacerops Allaceropinae Hyracodontidae Northwest China Oligocene
DOI	10.1007/s10914-025-09791-2
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42172001]###2413 ; National Natural Science Foundation of China[42430207]###3143 ; National Key Research and Development Program of China[2023YFF0804501]###2752
项目资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China
WOS研究方向	Evolutionary Biology ; Zoology
WOS类目	Evolutionary Biology ; Zoology
WOS记录号	WOS:001671938100001
出版者	SPRINGER
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/25285
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Deng, Tao
作者单位	1.Henan Univ Chinese Med, Dept Human Anat, Zhengzhou, Henan, Peoples R China 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Lu, Xiaokang,Deng, Tao,Sun, Boyang,et al. A new rhinocerotoid (Mammalia, Perissodactyla) from the early Oligocene of Ningdong, China, and its phylogenetic implications[J]. JOURNAL OF MAMMALIAN EVOLUTION,2026,32(4):13.
APA	Lu, Xiaokang,Deng, Tao,Sun, Boyang,Sun, Danhui,&Li, Shijie.(2026).A new rhinocerotoid (Mammalia, Perissodactyla) from the early Oligocene of Ningdong, China, and its phylogenetic implications.JOURNAL OF MAMMALIAN EVOLUTION,32(4),13.
MLA	Lu, Xiaokang,et al."A new rhinocerotoid (Mammalia, Perissodactyla) from the early Oligocene of Ningdong, China, and its phylogenetic implications".JOURNAL OF MAMMALIAN EVOLUTION 32.4(2026):13.