Growth and miniaturization among alvarersauroid dinosaurs

doi:10.1016/j.cub.2021.06.013

IVPP-IR > 中科院古脊椎所（2000年以后）

	Growth and miniaturization among alvarersauroid dinosaurs
	Qin, Zichuan 1; Zhao, Qi 2,3; Choiniere, Jonah N.4; Clark, James M.5; Benton, Michael J.1; Xu, Xing2,3
	2021-08-23
发表期刊	CURRENT BIOLOGY
ISSN	0960-9822
卷号	31 期号:16 页码:3687-+
摘要	Sustained miniaturization, here defined as a drop in body size of at least two orders of magnitude from ancestors to descendants, is a widespread and important phenomenon in animals,(1-3) but among dinosaurs, miniaturization occurred only rarely, once in the lineage leading to birds and once in the Alvarersauroidea,(1-3-5) one of the most bizarre theropod groups.(1,5-7) Miniaturization and powered flight are intimately linked in avialan theropods, (3,5,6,8-11) but the causes and patterns of body size reduction are less clear in the non-volant Alvarersauroidea. (1,5,6,)(12)(,)(13) Here, we present results from analyses on a comprehensive dataset, which not only includes new data from early-branching alvarersauroids but also considers the ontogenetic effect based on histological data. Our analyses show that alvarersauroid body mass underwent rapid miniaturization from around 110 to 85 mya and that there was a phylogenetic radiation of small-sized alvarersauroids in the Late Cretaceous. Our analyses also indicate that growth strategies were highly variable among alvarezsauroids, with significant differences among extremely small taxa. The suggested alvarersauroid miniaturization and associated phylogenetic radiation are coincident with the emergence of ants and termites, and combining previous functional morphological data, our study suggests that alvarersauroid miniaturization might have been driven by ecological changes during the Cretaceous Terrestrial Revolution, more specifically by a shift to the myrmecophagous ecological niche.
DOI	10.1016/j.cub.2021.06.013
关键词[WOS]	BODY-SIZE ; R PACKAGE ; EVOLUTION ; THEROPODA ; PATTERNS ; BIRD ; DIVERSIFICATION ; MONONYKUS ; TERMITES ; RATES
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[41120124002] ; US National Science Foundation[EAR 0310217] ; Newton Advanced Fellowships of Royal Society[NA160290] ; National Natural Science Foundation of China[42072008] ; National Natural Science Foundation of China[AOP 118794] ; National Natural Science Foundation of China[AOP 98800] ; National Natural Science Foundation of China[95449] ; Middlemiss Fund of the Geologists' Association
WOS研究方向	Biochemistry & Molecular Biology ; Life Sciences & Biomedicine - Other Topics ; Cell Biology
WOS类目	Biochemistry & Molecular Biology ; Biology ; Cell Biology
WOS记录号	WOS:000688368900006
出版者	CELL PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/18966
专题	中科院古脊椎所（2000年以后）
通讯作者	Xu, Xing
作者单位	1.Univ Bristol, Sch Earth Sci, Life Sci Bldg,Tyndall Ave, Bristol BS8 1TQ, Avon, England 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 4.Univ Witwatersrand, Evolutionary Studies Inst, Johannesburg, South Africa 5.George Washington Univ, Dept Biol Sci, Washington, DC 20052 USA
推荐引用方式 GB/T 7714	Qin, Zichuan,Zhao, Qi,Choiniere, Jonah N.,et al. Growth and miniaturization among alvarersauroid dinosaurs[J]. CURRENT BIOLOGY,2021,31(16):3687-+.
APA	Qin, Zichuan,Zhao, Qi,Choiniere, Jonah N.,Clark, James M.,Benton, Michael J.,&Xu, Xing.(2021).Growth and miniaturization among alvarersauroid dinosaurs.CURRENT BIOLOGY,31(16),3687-+.
MLA	Qin, Zichuan,et al."Growth and miniaturization among alvarersauroid dinosaurs".CURRENT BIOLOGY 31.16(2021):3687-+.

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