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Potential for Powered Flight Neared by Most Close Avialan Relatives, but Few Crossed Its Thresholds

文献类型：期刊论文

作者Pei, Rui2; Pittman, Michael3; Goloboff, Pablo A.4; Dececchi, T. Alexander5; Habib, Michael B.6; Kaye, Thomas G.7; Larsson, Hans C. E.8; Norell, Mark A.1; Brusatte, Stephen L.9; Xu, Xing2
刊名CURRENT BIOLOGY
出版日期2020-10-19
卷号30期号:20页码:4033-+
ISSN号0960-9822
DOI10.1016/j.cub.2020.06.105
通讯作者Pittman, Michael(mpittman@hku.hk)
英文摘要Uncertainties in the phylogeny of birds (Avialae) and their closest relatives have impeded deeper understanding of early theropod flight. To help address this, we produced an updated evolutionary hypothesis through an automated analysis of the Theropod Working Group (TWiG) coelurosaurian phylogenetic data matrix. Our larger, more resolved, and better-evaluated TWiG-based hypothesis supports the grouping of dromaeosaurids + troodontids (Deinonychosauria) as the sister taxon to birds (Paraves) and the recovery of Anchiornithinae as the earliest diverging birds. Although the phylogeny will continue developing, our current results provide a pertinent opportunity to evaluate what we know about early theropod flight. With our results and available data for vaned feathered pennaraptorans, we estimate the potential for powered flight among early birds and their closest relatives. We did this by using an ancestral state reconstruction analysis calculating maximum and minimum estimates of two proxies of powered flight potential-wing loading and specific lift. These results confirm powered flight potential in early birds but its rarity among the ancestors of the closest avialan relatives (select unenlagiine and microraptorine dromaeosaurids). For the first time, we find a broad range of these ancestors neared the wing loading and specific lift thresholds indicative of powered flight potential. This suggests there was greater experimentation with wing-assisted locomotion before theropod flight evolved than previously appreciated. This study adds invaluable support for multiple origins of powered flight potential in theropods (>= 3 times), which we now know was from ancestors already nearing associated thresholds, and provides a framework for its further study.
WOS关键词BIZARRE JURASSIC MANIRAPTORAN ; EIDERS SOMATERIA-MOLLISSIMA ; BODY-MASS ; TAKE-OFF ; EVOLUTION ; DINOSAUR ; FLIGHTLESSNESS ; THEROPOD ; ARCHAEOPTERYX ; PERFORMANCE
资助项目Research Grant Council of Hong Kong's General Research Fund[17103315] ; University of Hong Kong (RAE Improvement Fund of the Faculty of Science) ; University Research Committee Postdoctoral Fellow Scheme ; National Science Foundation of China[41688103] ; National Science Foundation of China[41120124002] ; National Science Foundation of China[91514302] ; National Science Foundation of China[41972025] ; CONICET[PUE0070] ; First Initiative Foundation
WOS研究方向Biochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics ; Cell Biology
语种英语
WOS记录号WOS:000579853000032
出版者CELL PRESS
资助机构Research Grant Council of Hong Kong's General Research Fund ; University of Hong Kong (RAE Improvement Fund of the Faculty of Science) ; University Research Committee Postdoctoral Fellow Scheme ; National Science Foundation of China ; CONICET ; First Initiative Foundation
源URL[http://119.78.100.205/handle/311034/18146]  
专题中国科学院古脊椎动物与古人类研究所
通讯作者Pittman, Michael
作者单位1.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA
2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China
3.Univ Hong Kong, Div Earth & Planetary Sci, Vertebrate Palaeontol Lab, Pokfulam, Hong Kong, Peoples R China
4.Consejo Nacl Invest Cient & Tecn CONICET, Unidad Ejecutora Lillo, San Miguel De Tucuman, Tucuman, Argentina
5.Mt Marty Coll, Div Nat Sci, Yankton, SD 57078 USA
6.Nat Hist Museum Los Angeles Cty, Dinosaur Inst, Los Angeles, CA 90007 USA
7.Fdn Sci Adv, Sierra Vista, AZ 85650 USA
8.McGill Univ, Redpath Museum, Montreal, PQ H3A 0C4, Canada
9.Univ Edinburgh, Sch Geosci, Edinburgh EH9 3FE, Midlothian, Scotland
推荐引用方式
GB/T 7714		 Pei, Rui,Pittman, Michael,Goloboff, Pablo A.,et al. Potential for Powered Flight Neared by Most Close Avialan Relatives, but Few Crossed Its Thresholds[J]. CURRENT BIOLOGY,2020,30(20):4033-+.
APA Pei, Rui.,Pittman, Michael.,Goloboff, Pablo A..,Dececchi, T. Alexander.,Habib, Michael B..,...&Xu, Xing.(2020).Potential for Powered Flight Neared by Most Close Avialan Relatives, but Few Crossed Its Thresholds.CURRENT BIOLOGY,30(20),4033-+.
MLA Pei, Rui,et al."Potential for Powered Flight Neared by Most Close Avialan Relatives, but Few Crossed Its Thresholds".CURRENT BIOLOGY 30.20(2020):4033-+.

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