Birdlike growth and mixed-age flocks in avimimids (Theropoda, Oviraptorosauria)

doi:10.1038/s41598-019-55038-5

IVPP-IR > 中科院古脊椎所（2000年以后）

	Birdlike growth and mixed-age flocks in avimimids (Theropoda, Oviraptorosauria)
	Funston, G. F.1; Currie, P. J.1; Ryan, M. J.2; Dong, Z. -M.3
	2019-12-11
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	9 页码:21
通讯作者	Funston, G. F.(Funston@ualberta.ca)
摘要	Avimimids were unusual, birdlike oviraptorosaurs from the Late Cretaceous of Asia. Initially enigmatic, new information has ameliorated the understanding of their anatomy, phylogenetic position, and behaviour. A monodominant bonebed from the Nemegt Formation of Mongolia showed that some avimimids were gregarious, but the site is unusual in the apparent absence of juveniles. Here, a second monodominant avimimid bonebed is described from the Iren Dabasu Formation of northern China. Elements recovered include numerous vertebrae and portions of the forelimbs and hindlimbs, representing a minimum of six individuals. Histological sampling of two tibiotarsi from the bonebed reveals rapid growth early in ontogeny followed by unexpectedly early onset of fusion and limited subsequent growth. This indicates that avimimids grew rapidly to adult size, like most extant birds but contrasting other small theropod dinosaurs. The combination of adults and juveniles in the Iren Dabasu bonebed assemblage provides evidence of mixed-age flocking in avimimids and the onset of fusion in young individuals suggests that some of the individuals in the Nemegt Formation bonebed may have been juveniles. Regardless, these individuals were likely functionally analogous to adults, and this probably facilitated mixed-age flocking by reducing ontogenetic niche shift in avimimids.
DOI	10.1038/s41598-019-55038-5
关键词[WOS]	DINOSAUR PARK FORMATION ; IREN DABASU FORMATION ; INNER-MONGOLIA ; BONE ; ALBERTA ; SEDIMENTOLOGY ; STRATIGRAPHY ; PHYSIOLOGY ; TAPHONOMY ; HISTOLOGY
收录类别	SCI
语种	英语
资助项目	Vanier Canada ; NSERC ; Alberta Innovates ; Dinosaur Research Institute ; NSERC[RGPIN-2017-04715]
项目资助者	Vanier Canada ; NSERC ; Alberta Innovates ; Dinosaur Research Institute ; NSERC
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000502612100001
出版者	NATURE PUBLISHING GROUP
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/16815
专题	中科院古脊椎所（2000年以后）
通讯作者	Funston, G. F.
作者单位	1.Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada 2.Carleton Univ, Dept Earth Sci, Ottawa, ON, Canada 3.Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Funston, G. F.,Currie, P. J.,Ryan, M. J.,et al. Birdlike growth and mixed-age flocks in avimimids (Theropoda, Oviraptorosauria)[J]. SCIENTIFIC REPORTS,2019,9:21.
APA	Funston, G. F.,Currie, P. J.,Ryan, M. J.,&Dong, Z. -M..(2019).Birdlike growth and mixed-age flocks in avimimids (Theropoda, Oviraptorosauria).SCIENTIFIC REPORTS,9,21.
MLA	Funston, G. F.,et al."Birdlike growth and mixed-age flocks in avimimids (Theropoda, Oviraptorosauria)".SCIENTIFIC REPORTS 9(2019):21.