Live birth in an archosauromorph reptile

doi:10.1038/ncomms14445

	Live birth in an archosauromorph reptile
	Liu, J 1,2,4; Organ, CL 3; Benton, MJ 5; Brandley, MC 6; Aitchison, JC 7
	2017-02-14
发表期刊	NATURE COMMUNICATIONS
ISSN	2041-1723
卷号	8 页码:?
摘要	Live birth has evolved many times independently in vertebrates, such as mammals and diverse groups of lizards and snakes. However, live birth is unknown in the major clade Archosauromorpha, a group that first evolved some 260 million years ago and is represented today by birds and crocodilians. Here we report the discovery of a pregnant long-necked marine reptile (Dinocephalosaurus) from the Middle Triassic (similar to 245 million years ago) of southwest China showing live birth in archosauromorphs. Our discovery pushes back evidence of reproductive biology in the clade by roughly 50 million years, and shows that there is no fundamental reason that archosauromorphs could not achieve live birth. Our phylogenetic models indicate that Dinocephalosaurus determined the sex of their offspring by sex chromosomes rather than by environmental temperature like crocodilians. Our results provide crucial evidence for genotypic sex determination facilitating land-water transitions in amniotes.
DOI	10.1038/ncomms14445
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000393859400001
出版者	NATURE PUBLISHING GROUP
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/13711
专题	中国科学院南京地质古生物研究所
作者单位	1.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China; 2.China Geol Survey, Chengdu Ctr, Chengdu 610081, Peoples R China; 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China; 4.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Jiangsu, Peoples R China; 5.Univ Bristol, Sch Earth Sci, Bristol BS8 1RJ, Avon, England; 6.Univ Sydney, Sch Life & Environm Sci, Sydney, NSW 2006, Australia; 7.Univ Queensland, Sch Earth & Environm Sci, Brisbane, Qld 4072, Australia
第一作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Liu, J,Organ, CL,Benton, MJ,et al. Live birth in an archosauromorph reptile[J]. NATURE COMMUNICATIONS,2017,8:?.
APA	Liu, J,Organ, CL,Benton, MJ,Brandley, MC,&Aitchison, JC.(2017).Live birth in an archosauromorph reptile.NATURE COMMUNICATIONS,8,?.
MLA	Liu, J,et al."Live birth in an archosauromorph reptile".NATURE COMMUNICATIONS 8(2017):?.