New basal eutherian mammal from the Early Cretaceous Jehol biota, Liaoning, China
文献类型：期刊论文
| 作者 | Hu, Yaoming2; Meng, Jin1 ; Li, Chuankui2; Wang, Yuanqing2; jmeng@amnh.org
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| 刊名 | PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
 |
| 出版日期 | 2010-01-22 |
| 卷号 | 277期号:1679页码:229-236 |
| 关键词 | Early Cretaceous Mammal Eutherian Jehol Biota Septomaxilla Therian Dentition |
| ISSN号 | 0962-8452 |
| 文献子类 | Article |
| 英文摘要 | A new genus and species of eutherian mammal, Acristatherium yanensis gen. et sp. nov., is described from the Early Cretaceous Jehol biota, China. The new taxon is based on a partial skull that is preserved in three dimensions from the Lujiatun bed of the Yixian Formation and dated 123.2+/-1.0 Ma. Its right upper and lower dentitions are nearly complete and it has a dental formula 4.1.5.3/3.1.5.3. The new mammal reveals several craniodental characteristics of Early Cretaceous eutherians previously unknown in fossil records of therians, such as a possible vestige of the septomaxilla. The craniodental features of the new taxon are compared with those of relevant Early Cretaceous eutherians and therians. Phylogenetic analyses based on a data matrix containing 70 taxa and 408 characters place A. yanensis as the most basal eutherian in the selected group. The morphological differences between Acristatherium and Eomaia indicate that eutherians already had a significant degree of generic diversification ca 125 Ma. |
| URL标识 | 查看原文 |
| WOS关键词 | SKULL ; EVOLUTION ; MONGOLIA ; SEPTOMAXILLA ; UZBEKISTAN ; SYNAPSIDS ; DENTITION |
| WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000272467300009 |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/4616]  |
| 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 古脊椎动物与古人类研究所_古哺乳动物研究室 |
| 通讯作者 | jmeng@amnh.org |
| 作者单位 | 1.Amer Museum Nat Hist, New York, NY 10024 USA 2.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 | Hu, Yaoming,Meng, Jin,Li, Chuankui,et al. New basal eutherian mammal from the Early Cretaceous Jehol biota, Liaoning, China[J]. PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2010,277(1679):229-236. |
| APA | Hu, Yaoming,Meng, Jin,Li, Chuankui,Wang, Yuanqing,&jmeng@amnh.org.(2010).New basal eutherian mammal from the Early Cretaceous Jehol biota, Liaoning, China.PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,277(1679),229-236. |
| MLA | Hu, Yaoming,et al."New basal eutherian mammal from the Early Cretaceous Jehol biota, Liaoning, China".PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 277.1679(2010):229-236. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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