TWO EOBAATARID (MULTITUBERCULATA; MAMMALIA) GENERA FROM THE LOWER CRETACEOUS SHAHAI AND FUXIN FORMATIONS, NORTHEASTERN CHINA

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	TWO EOBAATARID (MULTITUBERCULATA; MAMMALIA) GENERA FROM THE LOWER CRETACEOUS SHAHAI AND FUXIN FORMATIONS, NORTHEASTERN CHINA
	Kusuhashi, Nao 1,2; Hu, Yaoming 1; Wang, Yuanqing1 ; Setoguchi, Takeshi 2; Matsuoka, Hiroshige 2; nkusu@sci.ehime-u.ac.jp
刊名	JOURNAL OF VERTEBRATE PALEONTOLOGY
	2009-12-12
卷号	29 期号:4 页码:1264-1288
关键词	Sihetun Vertebrate Age Boundary Bearing Mongolia Montana
ISSN号	0272-4634
文献子类	Article
英文摘要	Two eobaatarid multituberculate genera including three species front the Lower Cretaceous (Aptian-Albian) Shahai and Fuxin formations in Liaoning Province, northeastern China are described here: Sinobaatar xiei sp. nov., S. fuxinensis sp. nov., and Liaobaatar changi gen. et sp. nov. Sinobaatar xiei is characterized by in I with cusp formula 3:2 (labial:lingual), P4 with cusp formula 2:4. blade-like P5 with three cusps anteroposteriorly arranged, M I with cusp formula 4:4, and M2 with cusp formula 3:4. P1 to P3 of S. xiei lack distinct posterior cingulum. Sinobaatar fuxinensis has a more distinct posterior cingulum on P1 to P3, and its M2 has cusp formula 3:3. Sinobaatar xiei is within the size range of most other eobaatarids, and S. fuxinensis is slightly larger than S. xiei. Liaobaatar changi is clearly larger than other eobaatarids. The ratio of p4 length and height of L. changi and S. xiei (L./S.) are 1.9 and 1.7, respectively. Liaobaatar changi is also characterized by nil with cusp formula 3:3. A specimen of S. fuxinensis indicates that tooth replacement in eobaatarids occurred in the typical backward sequence seen in Late Cretaceous-Tertiary multituberculates.
WOS关键词	SIHETUN VERTEBRATE ; AGE ; BOUNDARY ; BEARING ; MONGOLIA ; MONTANA
WOS研究方向	Paleontology
语种	英语
WOS记录号	WOS:000272861400022
公开日期	2013-11-27
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/4674]
专题	古脊椎动物与古人类研究所_图书馆1 古脊椎动物与古人类研究所_古低等脊椎动物研究室
通讯作者	nkusu@sci.ehime-u.ac.jp
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Kyoto Univ, Dept Geol & Mineral, Grad Sch Sci, Kyoto 6068502, Japan
推荐引用方式 GB/T 7714	Kusuhashi, Nao,Hu, Yaoming,Wang, Yuanqing,et al. TWO EOBAATARID (MULTITUBERCULATA; MAMMALIA) GENERA FROM THE LOWER CRETACEOUS SHAHAI AND FUXIN FORMATIONS, NORTHEASTERN CHINA[J]. JOURNAL OF VERTEBRATE PALEONTOLOGY,2009,29(4):1264-1288.
APA	Kusuhashi, Nao,Hu, Yaoming,Wang, Yuanqing,Setoguchi, Takeshi,Matsuoka, Hiroshige,&nkusu@sci.ehime-u.ac.jp.(2009).TWO EOBAATARID (MULTITUBERCULATA; MAMMALIA) GENERA FROM THE LOWER CRETACEOUS SHAHAI AND FUXIN FORMATIONS, NORTHEASTERN CHINA.JOURNAL OF VERTEBRATE PALEONTOLOGY,29(4),1264-1288.
MLA	Kusuhashi, Nao,et al."TWO EOBAATARID (MULTITUBERCULATA; MAMMALIA) GENERA FROM THE LOWER CRETACEOUS SHAHAI AND FUXIN FORMATIONS, NORTHEASTERN CHINA".JOURNAL OF VERTEBRATE PALEONTOLOGY 29.4(2009):1264-1288.