An Early Miocene microtoid cricetid rodent from the Junggar Basin of Xinjiang, China

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	An Early Miocene microtoid cricetid rodent from the Junggar Basin of Xinjiang, China
	Maridet, Olivier 1; Wu, Wenyu 1; Ye, He 1; Meng, Jin 2; Bi, Shundong 1; Ni, Xijun 1; Ni, XJ(倪喜军) (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China.
	2014-03-01
发表期刊	ACTA PALAEONTOLOGICA POLONICA
ISSN	0567-7920
卷号	59 期号:1 页码:1-7
文章类型	Article
摘要	Microtoid cricetids are widely considered to be the ancestral form of arvicoline rodents, a successful rodent group including voles, lemmings and muskrats. The oldest previously known microtoid cricetid is Microtocricetus molassicus from the Late Miocene (MN9, ca. 10-11 Ma) of Europe. Here, we report a new microtoid cricetid, Primoprismus fejfari gen. et sp. nov., from the Junggar Basin of Xinjiang, northwestern China. The rodent assemblage found in association with this specimen indicates a late Early Miocene age, roughly estimated at 18-17 Ma, and thus more than 6 million years older than M. molassicus. While morphological comparisons suggest that the new taxon is most closely related to M. molassicus, it differs from the latter in a striking combination of primitive characters, including a lower crown, smaller size, a differentiated posterolophid and hypolophid, a faint anterolophid, the absence of an ectolophid, and the presence Of a stylid on the labial border of the tooth. Arid conditions prevailing across the mid-latitude interior of Eurasia during the Early Miocene, enhanced by the combined effects of the Tibetan uplift and the gradual retreat of the Tethys Ocean, likely played a role in the appearance of grasslands, which in turn triggered the evolution of microtoid cricetids and, ultimately, the origin of arvicoline rodents.
关键词	Mammalia Rodentia Cricetidae Arvicolinae Miocene Junggar China Central Asia
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	ARAGONIAN VERTEBRATE FAUNA ; MUROID RODENTS ; EVOLUTIONARY HISTORY ; MOLECULAR PHYLOGENY ; NORTH-AMERICA ; MAMMALIA ; GENE ; RADIATION ; XIACAOWAN ; PLIOCENE
收录类别	SCI
语种	英语
项目资助者	Strategic Priority Research Program of Chinese Academy of Sciences (CAS) [XDB03020501]; National Basic Research Program of China [2012CB821904]; CAS 100-talent Program; National Natural Science Foundation of China [NSFC 40672009, 40872032]; NSFC [41050110135]; Research Fellowship for International Young Researchers from the Chinese Academy of Sciences [2009Y2BZ3]; National Science Foundation [EF-0629811]
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000334146800001
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/5172
专题	古哺乳动物研究室
通讯作者	Ni, XJ(倪喜军) (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China 2.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA
推荐引用方式 GB/T 7714	Maridet, Olivier,Wu, Wenyu,Ye, He,et al. An Early Miocene microtoid cricetid rodent from the Junggar Basin of Xinjiang, China[J]. ACTA PALAEONTOLOGICA POLONICA,2014,59(1):1-7.
APA	Maridet, Olivier.,Wu, Wenyu.,Ye, He.,Meng, Jin.,Bi, Shundong.,...&Ni, XJ.(2014).An Early Miocene microtoid cricetid rodent from the Junggar Basin of Xinjiang, China.ACTA PALAEONTOLOGICA POLONICA,59(1),1-7.
MLA	Maridet, Olivier,et al."An Early Miocene microtoid cricetid rodent from the Junggar Basin of Xinjiang, China".ACTA PALAEONTOLOGICA POLONICA 59.1(2014):1-7.

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