An oviraptorosaur adult-egg association from the Cretaceous of Jiangxi Province, China
文献类型:期刊论文
作者 | Jin, Xingsheng1,6; Varricchio, David J.2; Poust, Ashley W.3,4,5; He, Tao6 |
刊名 | JOURNAL OF VERTEBRATE PALEONTOLOGY
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出版日期 | 2020-05-01 |
页码 | 16 |
ISSN号 | 0272-4634 |
DOI | 10.1080/02724634.2019.1739060 |
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. |
WOS关键词 | GRAVID FOSSIL TURTLE ; DINOSAUR EGGS ; LIFE-HISTORY ; OPISTHOTONIC-POSTURE ; THEROPOD DINOSAUR ; SEXUAL-MATURITY ; MEDULLARY BONE ; LIVE BIRTH ; EVOLUTION ; REVEALS |
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研究方向 | Paleontology |
语种 | 英语 |
WOS记录号 | WOS:000535114600001 |
出版者 | TAYLOR & FRANCIS INC |
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 |
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.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Jiangsu, Peoples R China 2.Montana State Univ, Dept Earth Sci, Bozeman, MT 59717 USA 3.Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA 4.Univ Calif Berkeley, Museum Paleontol, Berkeley, CA 94720 USA 5.San Diego Nat Hist Museum, San Diego, CA 92101 USA 6.Zhejiang Museum Nat Hist, Hangzhou, Zhejiang, Peoples R China |
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. |
入库方式: OAI收割
来源:南京地质古生物研究所
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