Exceptional Early Jurassic fossils with leathery eggs shed light on dinosaur reproductive biology

doi:10.1093/nsr/nwad258

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	Exceptional Early Jurassic fossils with leathery eggs shed light on dinosaur reproductive biology
	Han, Fenglu1 ; Yu, Yilun 2,3; Zhang, Shukang 2; Zeng, Rong 4; Wang, Xinjin 5; Cai, Huiyang 4; Wu, Tianzhuang 4; Wen, Yingfeng 6; Cai, Sifu 4; Li, Chun2 ; Wu, Rui 1; Zhao, Qi 2; Xu, Xing2,7
	2023-10-09
发表期刊	NATIONAL SCIENCE REVIEW
ISSN	2095-5138
页码	13
通讯作者	Han, Fenglu([email protected]) ; Xu, Xing([email protected])
摘要	Our understanding of pre-Cretaceous dinosaur reproduction is hindered by a scarcity of evidence within fossil records. Here we report three adult skeletons and five clutches of embryo-containing eggs of a new sauropodomorph from the Lower Jurassic of southwestern China, displaying several significant reproductive features that are either unknown or unlike other early-diverging sauropodomorphs, such as relatively large eggs with a relatively thick calcareous shell formed by prominent mammillary cones, synchronous hatching and a transitional prehatching posture between the crocodilians and living birds. Most significantly, these Early Jurassic fossils provide strong evidence for the earliest known leathery eggs. Our comprehensive quantitative analyses demonstrate that the first dinosaur eggs were probably leathery, elliptical and relatively small, but with relatively long eggshell units, and that along the line to living birds, the most significant change in reptilian egg morphology occurred early in theropod evolution rather than near the origin of Aves. The earliest dinosaur eggs were probably leathery, relatively small and thin-shelled but theropod eggs become much larger and elongated.
关键词	dinosaur sauropodomorph Jurassic embryo egg evolution reproductive behavior
DOI	10.1093/nsr/nwad258
关键词[WOS]	PHYLOGENETIC-RELATIONSHIPS ; SAUROPOD DINOSAUR ; ANATOMY ; YUNNAN ; MASSOSPONDYLUS ; PROSAUROPODA ; EMBRYOS ; YOUNG ; SKULL
收录类别	SCI
语种	英语
资助项目	We thank Guizhou Provincial Museum for permission and research support; Krishna Hu for editing the manuscript; Shihui Mei, Zhenhuang Luo and Song Luo for collecting the specimens; Jinchao Ding for preparing the specimens; Shunyi Shi for Fig. 1b; Minghui Re
项目资助者	We thank Guizhou Provincial Museum for permission and research support; Krishna Hu for editing the manuscript; Shihui Mei, Zhenhuang Luo and Song Luo for collecting the specimens; Jinchao Ding for preparing the specimens; Shunyi Shi for Fig. 1b; Minghui Re
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001097659300001
出版者	OXFORD UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/23031
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Han, Fenglu; Xu, Xing
作者单位	1.China Univ Geosci Wuhan, Sch Earth Sci, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 3.Univ Chinese Acad Sci, Beijing 101408, Peoples R China 4.Guizhou Prov Museum, Guiyang 550081, Peoples R China 5.Guizhou Prov Inst Cultural Rel & Archaeol, Guiyang 550003, Peoples R China 6.Pingba Inst Cultural Rel Adm, Anshun 550820, Peoples R China 7.Yunnan Univ, Ctr Vertebrate Evolutionary Biol, Kunming 650091, Peoples R China
推荐引用方式 GB/T 7714	Han, Fenglu,Yu, Yilun,Zhang, Shukang,et al. Exceptional Early Jurassic fossils with leathery eggs shed light on dinosaur reproductive biology[J]. NATIONAL SCIENCE REVIEW,2023:13.
APA	Han, Fenglu.,Yu, Yilun.,Zhang, Shukang.,Zeng, Rong.,Wang, Xinjin.,...&Xu, Xing.(2023).Exceptional Early Jurassic fossils with leathery eggs shed light on dinosaur reproductive biology.NATIONAL SCIENCE REVIEW,13.
MLA	Han, Fenglu,et al."Exceptional Early Jurassic fossils with leathery eggs shed light on dinosaur reproductive biology".NATIONAL SCIENCE REVIEW (2023):13.