A NEW CRICETID RODENT FROM THE EARLY OLIGOCENE OF YUNNAN, CHINA, AND ITS EVOLUTIONARY IMPLICATIONS FOR EARLY EURASIAN CRICETIDS

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	A NEW CRICETID RODENT FROM THE EARLY OLIGOCENE OF YUNNAN, CHINA, AND ITS EVOLUTIONARY IMPLICATIONS FOR EARLY EURASIAN CRICETIDS
	Maridet, Olivier; Ni, Xijun; nixijun@ivpp.ac.cn
	2013
发表期刊	JOURNAL OF VERTEBRATE PALEONTOLOGY
ISSN	0272-4634
卷号	33 期号:1 页码:185-194
文章类型	Article
摘要	Here we report a new early Oligocene cricetid, Paracricetops virgatoincisus, gen. et sp. nov., discovered from the Caijiachong locality in Yunnan Province, China. This new cricetid shows a peculiar combination of characters, such as massive and transversely positioned cusps, crenulated cheek tooth enamel, and a deep fossette enclosed between protocone and paracone. These characters are also present in Cricetops, a cricetid rodent of which the phylogenetic relationship with other cricetids remains debatable. Our phylogenetic analysis based on a data matrix including 37 taxa and 67 morphological characters reveals that Paracricetops and Cricetops are sister groups. Paracricetops, Cricetops, Deperetomys, Meteamys, Selenomys, Melissiodon, Mirrabella, Enginia, Muhsinia, and Aralocricetodon constitute a monophyletic group. This result suggests that these genera should all be grouped in the subfamily Cricetopinae. Our phylogenetic analysis also casts new lights on the origin and early radiation of the family Cricetidae. The subfamily Pappocricetodontinae is a polyphyletic group. Pappocricetodon and Raricricetodon, two basal cricetid genera, are also polyphyletic. A thorough systematic revision of these basal cricetids is needed. Chronological distribution of Eucricetodontinae, Paracricetodontinae, Pseudocricetodontinae, and Cricetopinae indicates that the establishment of these cricetid clades should be in the late Eocene at least. We therefore deduced that the first diversification and dispersal of the family Cricetidae across Eurasia must have occurred well before the Eocene-Oligocene transition.
关键词	Eastern Mediterranean Area Incisor Enamel Lower Miocene Small Mammals Transition Phylogeny Revision Faunas
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]	EASTERN MEDITERRANEAN AREA ; INCISOR ENAMEL ; LOWER MIOCENE ; SMALL MAMMALS ; TRANSITION ; PHYLOGENY ; REVISION ; FAUNAS
收录类别	SCI
语种	英语
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000313497100015
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4227
专题	古哺乳动物研究室
通讯作者	nixijun@ivpp.ac.cn
作者单位	Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Maridet, Olivier,Ni, Xijun,nixijun@ivpp.ac.cn. A NEW CRICETID RODENT FROM THE EARLY OLIGOCENE OF YUNNAN, CHINA, AND ITS EVOLUTIONARY IMPLICATIONS FOR EARLY EURASIAN CRICETIDS[J]. JOURNAL OF VERTEBRATE PALEONTOLOGY,2013,33(1):185-194.
APA	Maridet, Olivier,Ni, Xijun,&nixijun@ivpp.ac.cn.(2013).A NEW CRICETID RODENT FROM THE EARLY OLIGOCENE OF YUNNAN, CHINA, AND ITS EVOLUTIONARY IMPLICATIONS FOR EARLY EURASIAN CRICETIDS.JOURNAL OF VERTEBRATE PALEONTOLOGY,33(1),185-194.
MLA	Maridet, Olivier,et al."A NEW CRICETID RODENT FROM THE EARLY OLIGOCENE OF YUNNAN, CHINA, AND ITS EVOLUTIONARY IMPLICATIONS FOR EARLY EURASIAN CRICETIDS".JOURNAL OF VERTEBRATE PALEONTOLOGY 33.1(2013):185-194.

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