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Two Early Cretaceous Fossils Document Transitional Stages in Alvarersaurian Dinosaur Evolution

文献类型：期刊论文

作者Xu, Xing1,2,3; Choiniere, Jonah4,5,6; Tan, Qingwei7; Benson, Roger B. J.4,8; Clark, James9,10; Sullivan, Corwin11,12; Zhao, Qi1; Han, Fenglu13; Ma, Qingyu1; He, Yiming14
刊名CURRENT BIOLOGY
出版日期2018-09-10
卷号28期号:17页码:2853-+
ISSN号0960-9822
DOI10.1016/j.cub.2018.07.057
通讯作者Xu, Xing(xingxu@vip.sina.com)
英文摘要Highly specialized animals are often difficult to place phylogenetically. The Late Cretaceous members of Alvarersauria represent such an example, having been posited as members of various theropod lineages, including birds [1-11. A 70-million-year ghost lineage exists between them and the Late Jurassic putative alvarersaurian Haplocheirus [12], which preserves so few derived features that its membership in Alvarersauria has recently been questioned [13]. If Haplocheirus is indeed an alvarersaurian, then the 70-million-year gap between Haplocheirus and other alvarersaurians represents the longest temporal hiatus within the fossil record of any theropod subgroup [14]. Here we report two new alvarersaurians from the Early Cretaceous of Western China that document successive, transitional stages in alvarersaurian evolution. They provide further support for Haplocheirus as an alvarersaurian and for alvarersaurians as basal maniraptorans. Furthermore, they suggest that the early biogeographic history of the Alvarersauria involved dispersals from Asia to other continents. The new specimens are temporally, morphologically, and functionally intermediate between Haplocheirus and other known alvarersaurians and provide a striking example of the evolutionary transition from a typical theropod forelimb configuration (i.e., the relatively long arm and three-digit grasping hand of typical tetanuran form in early-branching alvarersaurians) to a highly specialized one (i.e., the highly modified and shortened arm and one-digit digging hand of Late Cretaceous parvicursorines such as Linhenykus [1, 15]). Comprehensive analyses incorporating data from these new finds show that the specialized alvarersaurian forelimb morphology evolved slowly and in a mosaic fashion during the Cretaceous.
WOS关键词THEROPOD DINOSAURS ; SIZE EVOLUTION ; PATTERNS ; CHINA ; PHYLOGENY ; MONONYKUS ; XINJIANG ; BIRDS ; BODY ; ALVAREZSAURIDAE
资助项目National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[91514302] ; National Natural Science Foundation of China[41120124002] ; National Natural Science Foundation of China[41602013] ; National Natural Science Foundation of China[41602006] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB18030504] ; US NSF[EAR 0922187] ; DST of South Africa[98800] ; NRF of South Africa[95449] ; Palaeontological Scientific Trust (PAST) ; Kalbfleisch and Gerstner Scholarship of the Richard Gilder Graduate School ; American Museum of Natural History ; Friedel Sellschop Award ; European Union's Horizon 2020 Research and Innovation program 2014-2018[677774] ; Beijing Academy of Science and Technology Innovative Team Program[IG201705N]
WOS研究方向Biochemistry & Molecular Biology ; Cell Biology
语种英语
WOS记录号WOS:000444190900052
出版者CELL PRESS
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; US NSF ; DST of South Africa ; NRF of South Africa ; Palaeontological Scientific Trust (PAST) ; Kalbfleisch and Gerstner Scholarship of the Richard Gilder Graduate School ; American Museum of Natural History ; Friedel Sellschop Award ; European Union's Horizon 2020 Research and Innovation program 2014-2018 ; Beijing Academy of Science and Technology Innovative Team Program
源URL[http://119.78.100.205/handle/311034/8930]  
专题中国科学院古脊椎动物与古人类研究所
通讯作者Xu, Xing
作者单位1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, 142 Xiwai St, Beijing 100044, Peoples R China
2.CAS Ctr Excellence Life & Paleoenvironm, 142 Xiwai St, Beijing 100044, Peoples R China
3.Nanjing Univ, Ctr Res & Educ Biol Evolut & Environm, 163 Xianlin Rd, Nanjing 210045, Jiangsu, Peoples R China
4.Univ Witwatersrand, Evolutionary Studies Inst, Private Bag 3, ZA-2050 Johannesburg, South Africa
5.Amer Museum Nat Hist, Dept Vertebrate Paleontol, Cent Pk West & 79th St, New York, NY 10024 USA
6.Amer Museum Nat Hist, Richard Gilder Grad Sch, Cent Pk West & 79th St, New York, NY 10024 USA
7.Long Hao Inst Geol & Paleontol, Jia 29,Fengzhou Rd, Hohhot 010010, Nei Mongol, Peoples R China
8.Univ Oxford, Dept Earth Sci, South Parks Rd, Oxford OX1 3AN, England
9.George Washington Univ, Dept Biol Sci, 2023 G St NW, Washington, DC 20052 USA
10.Yunnan Univ, Ctr Vertebrate Evolutionary Biol, 2 Green Lake North Rd, Kunming 650091, Yunnan, Peoples R China
推荐引用方式
GB/T 7714		 Xu, Xing,Choiniere, Jonah,Tan, Qingwei,et al. Two Early Cretaceous Fossils Document Transitional Stages in Alvarersaurian Dinosaur Evolution[J]. CURRENT BIOLOGY,2018,28(17):2853-+.
APA Xu, Xing.,Choiniere, Jonah.,Tan, Qingwei.,Benson, Roger B. J..,Clark, James.,...&Tan, Lin.(2018).Two Early Cretaceous Fossils Document Transitional Stages in Alvarersaurian Dinosaur Evolution.CURRENT BIOLOGY,28(17),2853-+.
MLA Xu, Xing,et al."Two Early Cretaceous Fossils Document Transitional Stages in Alvarersaurian Dinosaur Evolution".CURRENT BIOLOGY 28.17(2018):2853-+.

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