KMS Institute of Vertebrate Paleontology and Paleoanthropology
TWO EOBAATARID (MULTITUBERCULATA; MAMMALIA) GENERA FROM THE LOWER CRETACEOUS SHAHAI AND FUXIN FORMATIONS, NORTHEASTERN CHINA | |
Kusuhashi, Nao1,2; Hu, Yaoming1; Wang, Yuanqing1; Setoguchi, Takeshi2; Matsuoka, Hiroshige2; nkusu@sci.ehime-u.ac.jp | |
2009-12-12 | |
发表期刊 | JOURNAL OF VERTEBRATE PALEONTOLOGY |
ISSN | 0272-4634 |
卷号 | 29期号:4页码:1264-1288 |
文章类型 | Article |
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. |
关键词 | Sihetun Vertebrate Age Boundary Bearing Mongolia Montana |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
关键词[WOS] | SIHETUN VERTEBRATE ; AGE ; BOUNDARY ; BEARING ; MONGOLIA ; MONTANA |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Paleontology |
WOS类目 | Paleontology |
WOS记录号 | WOS:000272861400022 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.205/handle/311034/4673 |
专题 | 中科院古脊椎所(2000年以后) 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. |
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