Histology and postural change during the growth of the ceratopsian dinosaur Psittacosaurus lujiatunensis

CORC > 古脊椎动物与古人类研究所 > 中国科学院古脊椎动物与古人类研究所 > 古低等脊椎动物研究室

	Histology and postural change during the growth of the ceratopsian dinosaur Psittacosaurus lujiatunensis
	Zhao, Qi 1,2; Benton, Michael J.1; Sullivan, Corwin 2; Sander, P. Martin 3; Xu, Xing 2; q.zhao@me.com
刊名	NATURE COMMUNICATIONS
	2013-06-01
卷号	4 期号:0 页码:0—0
关键词	Long-bone Histology Maiasaura-peeblesorum Embryos China Locomotion
ISSN号	2041-1723
文献子类	Article
英文摘要	A few dinosaurs are inferred to have undergone an ontogenetic shift from quadrupedal-to-bipedal posture, or vice versa, based on skeletal allometry. The basal ceratopsian Psittacosaurus lujiatunensis is considered to have been mainly bipedal as an adult. Here we infer a postural shift in this species based on a novel combination of limb measurements and histological data. The forelimb is strongly negatively allometric relative to the hindlimb, and patterns of vascular canal orientation provide evidence that growth of the hindlimb was particularly rapid during the middle part of ontogeny. Histology also makes it possible to determine the ontogenetic ages of individual specimens, showing that the forelimb-to-hindlimb ratio changed rapidly during the first or second year of life and thereafter decreased gradually. Occurrence of an ontogenetic shift from quadrupedality to bipedality was evidently widespread in dinosaurs, and may even represent the ancestral condition for the entire group.
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WOS关键词	LONG-BONE HISTOLOGY ; MAIASAURA-PEEBLESORUM ; EMBRYOS ; CHINA ; LOCOMOTION
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000323669700004
公开日期	2013-11-27
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/4148]
专题	古脊椎动物与古人类研究所_古低等脊椎动物研究室
通讯作者	q.zhao@me.com
作者单位	1.Univ Bristol, Sch Earth Sci, Bristol BS8 1RJ, Avon, England 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing 100044, Peoples R China 3.Univ Bonn, Steinmann Inst, Div Paleontol, D-53115 Bonn, Germany
推荐引用方式 GB/T 7714	Zhao, Qi,Benton, Michael J.,Sullivan, Corwin,et al. Histology and postural change during the growth of the ceratopsian dinosaur Psittacosaurus lujiatunensis[J]. NATURE COMMUNICATIONS,2013,4(0):0—0.
APA	Zhao, Qi,Benton, Michael J.,Sullivan, Corwin,Sander, P. Martin,Xu, Xing,&q.zhao@me.com.(2013).Histology and postural change during the growth of the ceratopsian dinosaur Psittacosaurus lujiatunensis.NATURE COMMUNICATIONS,4(0),0—0.
MLA	Zhao, Qi,et al."Histology and postural change during the growth of the ceratopsian dinosaur Psittacosaurus lujiatunensis".NATURE COMMUNICATIONS 4.0(2013):0—0.