A new species of Megacricetodon (Cricetidae, Rodentia, Mammalia) from the Middle Miocene of northern Junggar Basin, China

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	A new species of Megacricetodon (Cricetidae, Rodentia, Mammalia) from the Middle Miocene of northern Junggar Basin, China
	Bi, Shundong; Meng, Jin; Wu, Wenyu; Bi, SD (reprint author), Indiana Univ Penn, Dept Biol, Sect Vertebrate Paleontol, Carnegie Museum Nat Hist, Indiana, PA 15705 USA.
刊名	AMERICAN MUSEUM NOVITATES
	2008
期号	3602 页码:1—23
ISSN号	0003-0082
英文摘要	Dental, mandibular, and postcranial specimens of Megacricetodon yei n. sp., are described. The new specimens, including the complete dentition, mandible, and partial forelimb and hindlimb, represent the most complete materials known for the genus, provide valuable information concerning the interspecific variation of the genus, and lead to the reassessment of the suprageneric position of Megacricetodon. Megacricetodon yei is characterized by having medium-size, clearly split anterocone of M1, presence of the labial spur of the anterolophule and the posterior spur of the paracone in some M1s, medium to long mesoloph in M1-2, frequent occurrences of double protolophules, transverse or posteriorly directed metalophule of M2, and single anteroconid of the m1. Megacricetodon yei is more closely related to Megacricetodon (= Aktaumys) dzhungaricus than to any other species of Megacricetodon, but is more derived than the latter. Based on the new information, the validity of the genus Aktaumys is discussed. The postcranial features of Megacricetodon yei show clear adaptations for terrestrial habits, but as in many ground-dwelling rodents living in burrows, it could also climb or dig. The associated fauna has been correlated to Tongxin fauna from the adjacent part of China and the Belometchetskya fauna of north Caucasus, equivalent to early Middle Miocene age, or MN 6 correlative. The stage of evolution of Megacricetodon yei is consistent with the faunal correlation.
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公开日期	2013-11-27
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/3254]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Bi, SD (reprint author), Indiana Univ Penn, Dept Biol, Sect Vertebrate Paleontol, Carnegie Museum Nat Hist, Indiana, PA 15705 USA.
推荐引用方式 GB/T 7714	Bi, Shundong,Meng, Jin,Wu, Wenyu,et al. A new species of Megacricetodon (Cricetidae, Rodentia, Mammalia) from the Middle Miocene of northern Junggar Basin, China[J]. AMERICAN MUSEUM NOVITATES,2008(3602):1—23.
APA	Bi, Shundong,Meng, Jin,Wu, Wenyu,&Bi, SD .(2008).A new species of Megacricetodon (Cricetidae, Rodentia, Mammalia) from the Middle Miocene of northern Junggar Basin, China.AMERICAN MUSEUM NOVITATES(3602),1—23.
MLA	Bi, Shundong,et al."A new species of Megacricetodon (Cricetidae, Rodentia, Mammalia) from the Middle Miocene of northern Junggar Basin, China".AMERICAN MUSEUM NOVITATES .3602(2008):1—23.