An oviraptorosaur adult-egg association from the Cretaceous of Jiangxi Province, China
Jin, Xingsheng1,2; Varricchio, David J.3; Poust, Ashley W.4,5,6; He, Tao1
刊名JOURNAL OF VERTEBRATE PALEONTOLOGY
2020-05-01
页码16
ISSN号0272-4634
DOI10.1080/02724634.2019.1739060
英文摘要

With abundant well-preserved clutches and several adult-clutch associations, oviraptorids provide some of the most detailed information on reproduction for dinosaurs. Here, we describe an oviraptorosaur closely associated with two eggs from the Upper Cretaceous Nanxiong Formation of Jiangxi Province, China, and discuss its implications for various reproductive hypotheses. The specimen consists of a partial skeleton (gastralia, pelvis, portions of both hind limbs, and tail), with one egg within the pelvic canal and the other just posterior to it, ventral to the anterior caudal vertebrae. Several geopetal features indicate that the individual came to rest on its left side, with the eggs likely extruded during buildup of abdominal gases during decomposition. Similarity of pubis, caudal vertebrae, and pes dimensions to recently described material from the formation, e.g., Tongtianlong and Jiangxisaurus, suggests oviraptorid affinities. The specimen provides additional association of elongatoolithid eggs and the oogenus Macroolithus with oviraptorosaurs and further evidence for monoautochronic ovulation, i.e., iterative laying of two eggs at daily or greater intervals. With each egg 36-48% the size predicted for a modern bird of the same adult mass, total egg production would be slightly lower to similar between this non-avian maniraptoran and Neornithes. Histological tissues and open neurocentral sutures indicate that this reproductively active individual was several years old but still growing at the time of death, a pattern observed in other non-avian maniraptorans. The complete absence of medullary bone in this egg-bearing individual may challenge the identification of this tissue in other dinosaurs more distantly related to birds.

资助项目National Natural Science Foundation of China[41602019] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences)[163120] ; National Science Foundation EAR grant[847777] ; National Geographic Grant[8752-10] ; Doris O. and Samuel P. Welles Research Fund
WOS关键词GRAVID FOSSIL TURTLE ; DINOSAUR EGGS ; LIFE-HISTORY ; OPISTHOTONIC-POSTURE ; THEROPOD DINOSAUR ; SEXUAL-MATURITY ; MEDULLARY BONE ; LIVE BIRTH ; EVOLUTION ; REVEALS
WOS研究方向Paleontology
语种英语
出版者TAYLOR & FRANCIS INC
WOS记录号WOS:000535114600001
资助机构National Natural Science Foundation of China ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences) ; National Science Foundation EAR grant ; National Geographic Grant ; Doris O. and Samuel P. Welles Research Fund
内容类型期刊论文
源URL[http://ir.nigpas.ac.cn/handle/332004/31918]  
专题中国科学院南京地质古生物研究所
通讯作者Varricchio, David J.
作者单位1.Zhejiang Museum Nat Hist, Hangzhou, Zhejiang, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Jiangsu, Peoples R China
3.Montana State Univ, Dept Earth Sci, Bozeman, MT 59717 USA
4.Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA
5.San Diego Nat Hist Museum, San Diego, CA 92101 USA
6.Univ Calif Berkeley, Museum Paleontol, Berkeley, CA 94720 USA
推荐引用方式
GB/T 7714
Jin, Xingsheng,Varricchio, David J.,Poust, Ashley W.,et al. An oviraptorosaur adult-egg association from the Cretaceous of Jiangxi Province, China[J]. JOURNAL OF VERTEBRATE PALEONTOLOGY,2020:16.
APA Jin, Xingsheng,Varricchio, David J.,Poust, Ashley W.,&He, Tao.(2020).An oviraptorosaur adult-egg association from the Cretaceous of Jiangxi Province, China.JOURNAL OF VERTEBRATE PALEONTOLOGY,16.
MLA Jin, Xingsheng,et al."An oviraptorosaur adult-egg association from the Cretaceous of Jiangxi Province, China".JOURNAL OF VERTEBRATE PALEONTOLOGY (2020):16.
个性服务
查看访问统计
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。


©版权所有 ©2017 CSpace - Powered by CSpace