MIDDLE EOCENE CRICETIDS (RODENTIA, MAMMALIA) FROM THE ERLIAN BASIN, NEI MONGOL, CHINA

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	MIDDLE EOCENE CRICETIDS (RODENTIA, MAMMALIA) FROM THE ERLIAN BASIN, NEI MONGOL, CHINA
其他题名	内蒙古二连盆地呼和勃尔和剖面中始新世仓鼠类化石
	Li Qian
	2012
发表期刊	古脊椎动物学报
ISSN	1000-3118
卷号	50 期号:3 页码:237-244
摘要	New cricetids (Pappocricetodon neimongolensis sp. nov., Pappocricetodon cf. P. zhongtiaensis, Pappocricetodon sp.) are reported from the basal strata of the Irdin Manha Formation in the Huheboerhe section in Nei Mongol, China. P. neimongolensis is characterized by the following features: presence of a P4 or DP4; anterocone small; anterior arm of protocone on M1 well-developed and connected to anterocone; distinct paraloph joining protoconule and paracone; protocone on M1 lacking posterior arm; posterior arm of protocone present on M2; hypocone of M3 prominent; protoconid generally positioned anterior to metaconid on m1; posterior arm of protoconid on m2 complete; m3 unreduced, with“S”-shaped ectolophid. P. neimongolensis is morphologically similar to the early cricetid Pappocricetodon antiquus. Pappocricetodon sp. has a prominent anterior lobe, and Pappocricetodon cf. P. zhongtiaensis has a distinct mesoloph. These fossils suggest that cricetids were already diversified in the Middle Eocene, and probably originated earlier than the Irdinmanhan.
语种	英语
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/10936
专题	中国科学院古脊椎动物与古人类研究所
作者单位	中国科学院古脊椎动物与古人类研究所
第一作者单位	中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	Li Qian. MIDDLE EOCENE CRICETIDS (RODENTIA, MAMMALIA) FROM THE ERLIAN BASIN, NEI MONGOL, CHINA[J]. 古脊椎动物学报,2012,50(3):237-244.
APA	Li Qian.(2012).MIDDLE EOCENE CRICETIDS (RODENTIA, MAMMALIA) FROM THE ERLIAN BASIN, NEI MONGOL, CHINA.古脊椎动物学报,50(3),237-244.
MLA	Li Qian."MIDDLE EOCENE CRICETIDS (RODENTIA, MAMMALIA) FROM THE ERLIAN BASIN, NEI MONGOL, CHINA".古脊椎动物学报 50.3(2012):237-244.

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