globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.12.018
论文题名:
An oviraptorid preserved atop an embryo-bearing egg clutch sheds light on the reproductive biology of non-avialan theropod dinosaurs
作者: 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.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期:9
起始页码: 947
结束页码: 954
语种: 英语
中文关键词: 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
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
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被引频次[WOS]:19   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170193
Appears in Collections:气候变化与战略

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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

Recommended Citation:
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]. Science Bulletin,2021-01-01,66(9)
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