气候变化领域集成服务门户(CCPortal): New Yuomys rodents from southeastern Qinghai-Tibet Plateau indicate low elevation during the Middle Eocene

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DOI	10.3389/feart.2022.1018675
	New Yuomys rodents from southeastern Qinghai-Tibet Plateau indicate low elevation during the Middle Eocene
	Ni, Xijun; Li, Qiang; Deng, Tao; Zhang, Limin; Gong, Hao; Qin, Chao; Shi, Jingsong; Shi, Fuqiao; Fu, Shubing
发表日期	2023
EISSN	2296-6463
卷号	10
英文摘要	Yuomys are medium-sized Hystricomorpha rodents. They are known for coming from areas of low elevation in China during the middle and late Eocene. Two new Yuomys were discovered from a locality near Xueshuo village in Litang County, Sichuan Province. The locality lies in the Gemusi pull-apart basin formed in the Litang Fault System (LTFS) in the Hengduan Mountains. The current average elevation is about 4200 m. One of the two new Yuomys is larger and shows clear lophodont and unilateral hypsodont morphology, similar to Yuomys yunnanensis, which was discovered as being from the early middle Eocene (Irdinmanhan, Asian Land Mammal Ages) in the Chake Basin of Jianshui County, Yunnan Province. The Chake Basin is one of the small pull-apart basins formed in the Xianshuihe-Xiaojiang Fault system (XSH-XJF). The other new Yuomys rodent is smaller, brachydont, and less lophodont than the larger new species. The small new Yuomys is smaller than all known Yuomys except Yuomys huheboerhensis, which is from the early middle Eocene Irdinmanhan of Inner Mongolia in Northern China. Given their narrow biochronological distribution and presumably preferred living environment, the occurrence of Yuomys in the pull-apart basins in LTFS and XSH-XJF suggests that the two deep fault systems probably started strike-slip movement by the early middle Eocene, about 49-45 million years ago. Well-studied middle Eocene mammalian faunas from Henan and Inner Mongolia include Yuomys, primates, and other low elevation forest mammals. We suggest that the two new Yuomys species reported here probably also lived in a similar low elevation forest environment.
关键词	Yuomys Chuandian terrane accommodation zone strike-slip movement plateau uplifting
英文关键词	BLOCK ROTATION; CHINA; SYSTEM; BASIN; EVOLUTION; PRIMATES; AFRICAN; GROWTH; RISE
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000926646600001
来源期刊	FRONTIERS IN EARTH SCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283441
作者单位	Chinese Academy of Sciences; Institute of Vertebrate Paleontology & Paleoanthropology, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Ni, Xijun,Li, Qiang,Deng, Tao,et al. New Yuomys rodents from southeastern Qinghai-Tibet Plateau indicate low elevation during the Middle Eocene[J],2023,10.
APA	Ni, Xijun.,Li, Qiang.,Deng, Tao.,Zhang, Limin.,Gong, Hao.,...&Fu, Shubing.(2023).New Yuomys rodents from southeastern Qinghai-Tibet Plateau indicate low elevation during the Middle Eocene.FRONTIERS IN EARTH SCIENCE,10.
MLA	Ni, Xijun,et al."New Yuomys rodents from southeastern Qinghai-Tibet Plateau indicate low elevation during the Middle Eocene".FRONTIERS IN EARTH SCIENCE 10(2023).