| Homologies and homeotic transformation of the theropod 'semilunate' carpal | |
| Xu, Xing1; Han, Fenglu2; Zhao, Qi1; Xu, X(徐星) (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, 142 Xiwai St, Beijing 100044, Peoples R China. | |
| 2014-08-13 | |
| 发表期刊 | SCIENTIFIC REPORTS
 |
| ISSN | 2045-2322 |
| 卷号 | 4期号:4页码:4 |
| 文章类型 | Article |
| 摘要 | The homology of the 'semilunate' carpal, an important structure linking non-avian and avian dinosaurs, has been controversial. Here we describe the morphology of some theropod wrists, demonstrating that the 'semilunate' carpal is not formed by the same carpal elements in all theropods possessing this feature and that the involvement of the lateralmost distal carpal in forming the 'semilunate' carpal of birds is an inheritance from their non-avian theropod ancestors. Optimization of relevant morphological features indicates that these features evolved in an incremental way and the 'semilunate' structure underwent a lateral shift in position during theropod evolution, possibly as a result of selection for foldable wings in birds and their close theropod relatives. We propose that homeotic transformation was involved in the evolution of the 'semilunate' carpal. In combination with developmental data on avian wing digits, this suggests that homeosis played a significant role in theropod hand evolution in general. |
| WOS标题词 | Science & Technology |
| 关键词[WOS] | AVIAN HAND ; EVOLUTION ; DINOSAUR ; CHINA ; ORIGIN ; BIRDS ; DIGITS ; WINGS |
| 收录类别 | SCI |
| 语种 | 英语 |
| 项目资助者 | National Natural Science Foundation of China [41120124002]; 973 program [2012CB821900] |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| WOS记录号 | WOS:000340674400002 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/5137 |
| 专题 | 古低等脊椎动物研究室 |
| 通讯作者 | Xu, X(徐星) (reprint author), Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, 142 Xiwai St, Beijing 100044, Peoples R China. |
| 作者单位 | 1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Xing,Han, Fenglu,Zhao, Qi,et al. Homologies and homeotic transformation of the theropod 'semilunate' carpal[J]. SCIENTIFIC REPORTS,2014,4(4):4. |
| APA | Xu, Xing,Han, Fenglu,Zhao, Qi,&Xu, X.(2014).Homologies and homeotic transformation of the theropod 'semilunate' carpal.SCIENTIFIC REPORTS,4(4),4. |
| MLA | Xu, Xing,et al."Homologies and homeotic transformation of the theropod 'semilunate' carpal".SCIENTIFIC REPORTS 4.4(2014):4. |
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| Homologies and homeo（995KB） | 开放获取 | CC BY-NC-SA | 浏览 下载 | |||
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