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A new clade of basal Early Cretaceous pygostylian birds and developmental plasticity of the avian shoulder girdle
Wang, Min1,2; Stidham, Thomas A.1,2; Zhou, Zhonghe1,2
2018-10-16
发表期刊PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
卷号115期号:42页码:10708-10713
摘要Early members of the clade Pygostylia (birds with a short tail ending in a compound bone termed "pygostyle") are critical for understanding how the modern avian bauplan evolved from long-tailed basal birds like Archaeopteryx. However, the currently limited known diversity of early branching pygostylians obscures our understanding of this major transition in avian evolution. Here, we describe a basal pygostylian, Jinguofortis perplexus gen. et sp. nov., from the Early Cretaceous of China that adds important information about early members of the short-tailed bird group. Phylogenetic analysis recovers a clade (Jinguofortisidae fam. nov.) uniting Jinguofortis and the enigmatic basal avian taxon Chongmingia that represents the second earliest diverging group of the Pygostylia. Jinguofortisids preserve a mosaic combination of plesiomorphic nonavian theropod features such as a fused scapulocoracoid (a major component of the flight apparatus) and more derived flight-related morphologies including the earliest evidence of reduction in manual digits among birds. The presence of a fused scapulocoracoid in adult individuals independently evolved in Jinguofortisidae and Confuciusornithiformes may relate to an accelerated osteogenesis during chondrogenesis and likely formed through the heterochronic process of peramorphosis by which these basal taxa retain the scapulocoracoid of the nonavian theropod ancestors with the addition of flight-related modifications. With wings having a low aspect ratio and wing loading, Jinguofortis may have been adapted particularly to dense forest environments. The discovery of Jinguofortis increases the known ecomorphological diversity of basal pygostylians and highlights the importance of developmental plasticity for understanding mosaic evolution in early birds.
关键词bird development Mesozoic plasticity phylogeny
DOI10.1073/pnas.1812176115
关键词[WOS]EVOLUTION ; CHINA ; ARCHAEOPTERYX ; THEROPODA ; FLIGHT ; AVES ; MORPHOLOGY ; SPECIMEN ; INSIGHT ; ANATOMY
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[41722202] ; National Natural Science Foundation of China[41502002] ; Youth Innovation Promotion Association, Chinese Academy of Sciences Grant[2016073]
WOS研究方向Science & Technology - Other Topics
WOS类目Multidisciplinary Sciences
WOS记录号WOS:000447491300060
出版者NATL ACAD SCIENCES
引用统计
文献类型期刊论文
条目标识符http://119.78.100.205/handle/311034/10165
专题中国科学院古脊椎动物与古人类研究所
通讯作者Wang, Min; Zhou, Zhonghe
作者单位1.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China
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Wang, Min,Stidham, Thomas A.,Zhou, Zhonghe. A new clade of basal Early Cretaceous pygostylian birds and developmental plasticity of the avian shoulder girdle[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2018,115(42):10708-10713.
APA Wang, Min,Stidham, Thomas A.,&Zhou, Zhonghe.(2018).A new clade of basal Early Cretaceous pygostylian birds and developmental plasticity of the avian shoulder girdle.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,115(42),10708-10713.
MLA Wang, Min,et al."A new clade of basal Early Cretaceous pygostylian birds and developmental plasticity of the avian shoulder girdle".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 115.42(2018):10708-10713.
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