气候变化领域集成服务门户(CCPortal): An oviraptorid preserved atop an embryo-bearing egg clutch sheds light on the reproductive biology of non-avialan theropod dinosaurs

CCPortal

DOI	10.1016/j.scib.2020.12.018
	An oviraptorid preserved atop an embryo-bearing egg clutch sheds light on the reproductive biology of non-avialan theropod dinosaurs
	Bi S.; Amiot R.; Peyre de Fabrègues C.; Pittman M.; Lamanna M.C.; Yu Y.; Yu C.; Yang T.; Zhang S.; Zhao Q.; Xu X.
发表日期	2021
ISSN	20959273
起始页码	947
结束页码	954
卷号	66 期号:9
英文摘要	Recent studies demonstrate that many avialan features evolved incrementally prior to the origin of the group, but the presence of some of these features, such as bird-like brooding behaviours, remains contentious in non-avialan dinosaurs. Here we report the first non-avialan dinosaur fossil known to preserve an adult skeleton atop an egg clutch that contains embryonic remains. The preserved positional relationship of the adult to the clutch, coupled with the advanced growth stages of the embryos and their high estimated incubation temperatures, provides strong support for the brooding hypothesis. Furthermore, embryos in the clutch are at different developmental stages, suggesting the presence of asynchronous hatching—a derived feature even among crown-group birds—in non-avialan theropods. These findings demonstrate that the evolution of reproductive biology along bird-line archosaurs was a complex rather than a linear and incremental process, and suggest that some aspects of non-avialan theropod reproduction were unique to these dinosaurs. © 2020 Science China Press
关键词	Asynchronous hatching Brooding Clutch Cretaceous Embryos Oviraptorosauria
英文关键词	Birds; Cell proliferation; Advanced growths; Derived features; Developmental stage; Dinosaur fossils; Incremental process; Incubation temperatures; Positional relationship; Reproductive biology; Clutches
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207345
作者单位	Centre for Vertebrate Evolutionary Biology, Institute of Palaeontology, Yunnan University, Kunming, 650091, China; Department of Biology, Indiana University of Pennsylvania, Indiana, PA 15705, United States; Univ Lyon, Univ Lyon 1, ENSL, CNRS, LGL-TPE, Villeurbanne, F-69622, France; Vertebrate Palaeontology Laboratory, Division of Earth and Planetary Science, The University of Hong Kong, Hong Kong; Section of Vertebrate Paleontology, Carnegie Museum of Natural History, Pittsburgh, PA 15213, United States; Yuanpei College, Peking University, Beijing, 100871, China; Division of Paleontology, American Museum of Natural History, New York, NY 10024, United States; Key Laboratory of Vertebrate Evolution and Human Origins, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, 100044, China; Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Beijing, 100044, China
推荐引用方式 GB/T 7714	Bi S.,Amiot R.,Peyre de Fabrègues C.,et al. An oviraptorid preserved atop an embryo-bearing egg clutch sheds light on the reproductive biology of non-avialan theropod dinosaurs[J],2021,66(9).
APA	Bi S..,Amiot R..,Peyre de Fabrègues C..,Pittman M..,Lamanna M.C..,...&Xu X..(2021).An oviraptorid preserved atop an embryo-bearing egg clutch sheds light on the reproductive biology of non-avialan theropod dinosaurs.Science Bulletin,66(9).
MLA	Bi S.,et al."An oviraptorid preserved atop an embryo-bearing egg clutch sheds light on the reproductive biology of non-avialan theropod dinosaurs".Science Bulletin 66.9(2021).