KMS Institute of Vertebrate Paleontology and Paleoanthropology
| Digital restoration of the pectoral girdles of two Early Cretaceous birds and implications for early-flight evolution | |
Wang, Shiying1,2,3; Ma, Yubo4; Wu, Qian1,2,3; Wang, Min1,2 ; Hu, Dongyu5; Sullivan, Corwin4,6; Xu, Xing1,2,5,7
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| 2022-03-31 | |
| 发表期刊 | ELIFE
 |
| ISSN | 2050-084X |
| 卷号 | 11期号:e76086页码:18 |
| 摘要 | The morphology of the pectoral girdle, the skeletal structure connecting the wing to the body, is a key determinant of flight capability, but in some respects is poorly known among stem birds. Here, the pectoral girdles of the Early Cretaceous birds Sapeornis and Piscivorenantiornis are reconstructed for the first time based on computed tomography and three-dimensional visualization, revealing key morphological details that are important for our understanding of early-flight evolution. Sapeornis exhibits a double articulation system (widely present in non-enantiornithine pennaraptoran theropods including crown birds), which involves, alongside the main scapula-coracoid joint, a small subsidiary joint, though variation exists with respect to the shape and size of the main and subsidiary articular contacts in non-enantiornithine pennaraptorans. This double articulation system contrasts with Piscivorenantiornis in which a spatially restricted scapula-coracoid joint is formed by a single set of opposing articular surfaces, a feature also present in other members of Enantiornithines, a major clade of stem birds known only from the Cretaceous. The unique single articulation system may reflect correspondingly unique flight behavior in enantiornithine birds, but this hypothesis requires further investigation from a functional perspective. Our renderings indicate that both Sapeornis and Piscivorenantiornis had a partially closed triosseal canal (a passage for muscle tendon that plays a key role in raising the wing), and our study suggests that this type of triosseal canal occurred in all known non-euornithine birds except Archaeopteryx, representing a transitional stage in flight apparatus evolution before the appearance of a fully closed bony triosseal canal as in modern birds. Our study reveals additional lineage-specific variations in pectoral girdle anatomy, as well as significant modification of the pectoral girdle along the line to crown birds. These modifications produced diverse pectoral girdle morphologies among Mesozoic birds, which allowed a commensurate range of capability levels and styles to emerge during the early evolution of flight. |
| 关键词 | Early Cretaceous stem birds pectoral girdle scapula-coracoid articulation triosseal canal Other |
| DOI | 10.7554/eLife.76086 |
| 关键词[WOS] | ENANTIORNITHINE BIRD ; SAPEORNIS-CHAOYANGENSIS ; AVES ORNITHOTHORACES ; CHINA ; ARCHAEOPTERYX ; THEROPOD ; ORIGIN ; MORPHOLOGY ; DINOSAUR ; INFORMATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41688103] ; University of Alberta ; University of Alberta ; Natural Sciences and Engineering Research Council of Canada[RGPIN-2017-06246] ; Natural Sciences and Engineering Research Council of Canada[RGPIN-2017-06246] ; International Partnership Program of Chinese Academy of Sciences[132311KYSB20180016] ; International Partnership Program of Chinese Academy of Sciences[132311KYSB20180016] ; National Natural Science Foundation of China[42288201] ; National Natural Science Foundation of China[42288201] ; National Natural Science Foundation of China[42072030] ; National Natural Science Foundation of China[42072030] |
| WOS研究方向 | Life Sciences & Biomedicine - Other Topics |
| WOS类目 | Biology |
| WOS记录号 | WOS:000807754700001 |
| 出版者 | eLIFE SCIENCES PUBL LTD |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/21695 |
| 专题 | 中科院古脊椎所（2000年以后） |
| 通讯作者 | Wang, Min; Hu, Dongyu; Xu, Xing |
| 作者单位 | 1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Beijing, Peoples R China 4.Univ Alberta, Edmonton, AB, Canada 5.Shenyang Normal Univ, Shenyang, Peoples R China 6.Philip J Currie Dinosaur Museum, Wembley, AB, Canada 7.Yunnan Univ, Ctr Vertebrate Evolutionary Biol, Kunming, Yunnan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Shiying,Ma, Yubo,Wu, Qian,et al. Digital restoration of the pectoral girdles of two Early Cretaceous birds and implications for early-flight evolution[J]. ELIFE,2022,11(e76086):18. |
| APA | Wang, Shiying.,Ma, Yubo.,Wu, Qian.,Wang, Min.,Hu, Dongyu.,...&Xu, Xing.(2022).Digital restoration of the pectoral girdles of two Early Cretaceous birds and implications for early-flight evolution.ELIFE,11(e76086),18. |
| MLA | Wang, Shiying,et al."Digital restoration of the pectoral girdles of two Early Cretaceous birds and implications for early-flight evolution".ELIFE 11.e76086(2022):18. |
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| Digital restoration （3145KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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