Chicken-sized oviraptorid dinosaurs from central China and their;ontogenetic implications

doi:10.1007/s00114-012-1007-0

CORC > 中国地质调查局 > 中国地质调查局

	Chicken-sized oviraptorid dinosaurs from central China and their;ontogenetic implications
	Lu, Junchang 4; Currie, Philip J.; Xu, Li 2; Zhang, Xingliao 2; Pu, Hanyong 2; Jia, Songhai 2
刊名	NATURWISSENSCHAFTEN
	2013
卷号	100 期号:2 页码:165-175
关键词	Baby oviraptorid Yulong Late Cretaceous Henan Province
ISSN号	0028-1042
DOI	10.1007/s00114-012-1007-0
英文摘要	Oviraptorids are a group of specialized non-avian theropod dinosaurs that were generally one to 8 m in body length. New specimens of baby oviraptorids from the Late Cretaceous of Henan Province are some of the smallest individuals known. They include diagnostic characters such as the relative position of the antorbital fenestra and the external naris, distinct opening in the premaxilla anteroventral to the external naris, antorbital fossa partly bordered by premaxilla posterodorsally, lacrimal process of premaxilla does not contact the anterodorsal process of the lacrimal, parietal almost as long as frontal; in dorsal view, posterior margin forms a straight line between the postzygapophyses in each of the fourth and fifth cervicals; femur longer than ilium. They also elucidate the ontogenetic processes of oviraptorids, including fusion of cranial elements and changes in relative body proportions. Hind limb proportions are constant in oviraptorids, regardless of absolute body size or ontogenetic stage. This suggests a sedentary lifestyle that did not involve the pursuit of similar-sized prey. The functional implications for bite force and therefore dietary preferences are better understood through the study of such small animals. The comparison of the measurements of 115 skeletons indicates that oviraptorids maintain their hind limb proportions regardless of ontogenetic stage or absolute size, which is a pattern seen more commonly in herbivores than in carnivores. This may weakly support the hypothesis that oviraptorids are herbivores rather than active carnivores.
学科主题	古生物学
WOS关键词	NORTH-AMERICA ; TYRANNOSAUR##ID#DINOSAURS ; CRANIAL ANATOMY ; BODY-SIZE ; THEROPODA ; MONGOLIA ; SAURISCHIA ; CHIROSTENOTES ; DIMENSIONS ; ALBERTA
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000314275500006
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40133]
专题	中国地质调查局
作者单位	1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China. 2.Currie, Philip J.] Univ Alberta, Dept Biol Sci, Edmonton, AB T6G 2E9, Canada. 3.Henan Geol Museum, Zhengzhou 450016, Henan Province, Peoples R China. 4.中国地质科学院地质研究所
推荐引用方式 GB/T 7714	Lu, Junchang,Currie, Philip J.,Xu, Li,et al. Chicken-sized oviraptorid dinosaurs from central China and their;ontogenetic implications[J]. NATURWISSENSCHAFTEN,2013,100(2):165-175.
APA	Lu, Junchang,Currie, Philip J.,Xu, Li,Zhang, Xingliao,Pu, Hanyong,&Jia, Songhai.(2013).Chicken-sized oviraptorid dinosaurs from central China and their;ontogenetic implications.NATURWISSENSCHAFTEN,100(2),165-175.
MLA	Lu, Junchang,et al."Chicken-sized oviraptorid dinosaurs from central China and their;ontogenetic implications".NATURWISSENSCHAFTEN 100.2(2013):165-175.