热门
An ancestral turtle from the Late Triassic of southwestern China
文献类型：期刊论文
| 作者 | Li, Chun1 ; Wu, Xiao-Chun2; Rieppel, Olivier3; Wang, Li-Ting4; Zhao, Li-Jun5; lichun@ivpp.ac.cn
|
| 刊名 | NATURE
 |
| 出版日期 | 2008-11-27 |
| 卷号 | 456期号:7221页码:497-501 |
| 关键词 | Chelydra-serpentina Reptilia Origin Shell Histology Evolution Guizhou Osteoderms Area |
| ISSN号 | 0028-0836 |
| 文献子类 | Article |
| 英文摘要 | The origin of the turtle body plan remains one of the great mysteries of reptile evolution. The anatomy of turtles is highly derived, which renders it difficult to establish the relationships of turtles with other groups of reptiles. The oldest known turtle, Proganochelys from the Late Triassic period of Germany(1), has a fully formed shell and offers no clue as to its origin. Here we describe a new 220- million- year- old turtle from China, somewhat older than Proganochelys, that documents an intermediate step in the evolution of the shell and associated structures. A ventral plastron is fully developed, but the dorsal carapace consists of neural plates only. The dorsal ribs are expanded, and osteoderms are absent. The new species shows that the plastron evolved before the carapace and that the first step of carapace formation is the ossification of the neural plates coupled with a broadening of the ribs. This corresponds to early embryonic stages of carapace formation in extant turtles, and shows that the turtle shell is not derived from a fusion of osteoderms. Phylogenetic analysis places the new species basal to all known turtles, fossil and extant. The marine deposits that yielded the fossils indicate that this primitive turtle inhabited marginal areas of the sea or river deltas. |
| URL标识 | 查看原文 |
| WOS关键词 | CHELYDRA-SERPENTINA REPTILIA ; ORIGIN ; SHELL ; HISTOLOGY ; EVOLUTION ; GUIZHOU ; OSTEODERMS ; AREA |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000261170500037 |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/4792]  |
| 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 | lichun@ivpp.ac.cn |
| 作者单位 | 1.Chinese Acad Sci, Lab Evolut Systemat Vertebrates, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 2.Canadian Museum Nat, Ottawa, ON K1P 6P4, Canada 3.Field Museum Nat Hist, Dept Geol, Chicago, IL 60605 USA 4.Geol Survey Guizhou Prov, Guiyang 550005, Peoples R China 5.Zhejiang Museum Nat Hist, Hangzhou 310012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Chun,Wu, Xiao-Chun,Rieppel, Olivier,et al. An ancestral turtle from the Late Triassic of southwestern China[J]. NATURE,2008,456(7221):497-501. |
| APA | Li, Chun,Wu, Xiao-Chun,Rieppel, Olivier,Wang, Li-Ting,Zhao, Li-Jun,&lichun@ivpp.ac.cn.(2008).An ancestral turtle from the Late Triassic of southwestern China.NATURE,456(7221),497-501. |
| MLA | Li, Chun,et al."An ancestral turtle from the Late Triassic of southwestern China".NATURE 456.7221(2008):497-501. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。