An Egg-Adult Association, Gender, and Reproduction in Pterosaurs

CORC > 中国地质调查局 > 中国地质调查局

	An Egg-Adult Association, Gender, and Reproduction in Pterosaurs
	Lu, JC (Lue, Junchang); Unwin, DM (Unwin, David M.); Deeming, DC (Deeming, D. Charles); Jin, XS (Jin, Xingsheng); Liu, YQ (Liu, Yongqing); Ji, QA (Ji, Qiang)
刊名	SCIENCE
	2011
卷号	331 期号:6015 页码:321-324
ISSN号	0036-8075
英文摘要	A sexually mature individual of Darwinopterus preserved together with an egg from the Jurassic of China provides direct evidence of gender in pterosaurs and insights into the reproductive biology of these extinct fliers. This new find and several other examples of Darwinopterus demonstrate that males of this pterosaur had a relatively small pelvis and a large cranial crest, whereas females had a relatively large pelvis and no crest. The ratio of egg mass to adult mass is relatively low, as in extant reptiles, and is comparable to values for squamates. A parchment-like eggshell points to burial and significant uptake of water after oviposition. This evidence for low parental investment contradicts the widespread assumption that reproduction in pterosaurs was like that of birds and shows that it was essentially like that of reptiles.
学科主题	古生物学
WOS关键词	PTERODAUSTRO-GUINAZUI ; EGGSHELL STRUCTURE ; EVOLUTION ; PTERANODON ; ONTOGENY
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	AMER ASSOC ADVANCEMENT SCIENCE
WOS记录号	WOS:000286636300034
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/39397]
专题	中国地质调查局
作者单位	Zhejiang Museum Nat Hist, Hangzhou 310012, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Lu, JC ,Unwin, DM ,Deeming, DC ,et al. An Egg-Adult Association, Gender, and Reproduction in Pterosaurs[J]. SCIENCE,2011,331(6015):321-324.
APA	Lu, JC ,Unwin, DM ,Deeming, DC ,Jin, XS ,Liu, YQ ,&Ji, QA .(2011).An Egg-Adult Association, Gender, and Reproduction in Pterosaurs.SCIENCE,331(6015),321-324.
MLA	Lu, JC ,et al."An Egg-Adult Association, Gender, and Reproduction in Pterosaurs".SCIENCE 331.6015(2011):321-324.