A large and unusually thick-shelled turtle egg with embryonic remains from the Upper Cretaceous of China

doi:10.1098/rspb.2021.1239

IVPP-IR > 中科院古脊椎所（2000年以后）

	A large and unusually thick-shelled turtle egg with embryonic remains from the Upper Cretaceous of China
	Ke, Yuzheng 1; Wu, Rui 1; Zelenitsky, Darla K.2; Brinkman, Don 3; Hu, Jinfeng 1; Zhang, Shukang 4; Jiang, Haishui 1; Han, Fenglu1
	2021-08-25
发表期刊	PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
ISSN	0962-8452
卷号	288 期号:1957 页码:9
通讯作者	Han, Fenglu(hanfl@cug.edu.cn)
摘要	Turtle eggs containing embryos are exceedingly rare in the fossil record. Here, we provide the first description and taxonomic identification, to our knowledge, of a fossilized embryonic turtle preserved in an egg, a fossil recovered from the Upper Cretaceous Xiaguan Formation of Henan Province, China. The specimen is attributed to the Nanhsiungchelyidae (Pan-Trionychia), an extinct group of large terrestrial turtles (possibly the species Yuchelys nanyangensis). The egg is rigid, spherical, and is one of the largest and thickest shelled Mesozoic turtle eggs known. Importantly, this specimen allowed identification of other nanhsiungchelyid egg clutches and comparison to those of Adocidae, as Nanhsiungchelyidae and Adocidae form the basal extinct clade Adocusia of the Pan-Trionychia (includes living soft-shelled turtles). Despite the differences in habitat adaptations, nanhsiungchelyids (terrestrial) and adocids (aquatic) shared several reproductive traits, including relatively thick eggshells, medium size clutches and relatively large eggs, which may be primitive for trionychoids (including Adocusia and Carrettochelyidae). The unusually thick calcareous eggshell of nanhsiungchelyids compared to those of all other turtles (including adocids) may be related to a nesting style adaptation to an extremely harsh environment.
关键词	turtle egg embryo thick eggshell Nanhsiungchelyidae Upper Cretaceous China
DOI	10.1098/rspb.2021.1239
关键词[WOS]	GRAVID FOSSIL TURTLE ; SKELETAL DEVELOPMENT ; INNER-MONGOLIA ; NANHSIUNGCHELYID TURTLE ; HENAN PROVINCE ; BAYAN MANDAHU ; TESTUDINES ; REPTILIA ; EVOLUTION ; CLUTCH
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[41830320] ; NSERC[327513-2009]
项目资助者	National Natural Science Foundation of China ; NSERC
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目	Biology ; Ecology ; Evolutionary Biology
WOS记录号	WOS:000687673400002
出版者	ROYAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/18939
专题	中科院古脊椎所（2000年以后）
通讯作者	Han, Fenglu
作者单位	1.China Univ Geosci Wuhan, Sch Earth Sci, Wuhan 430074, Peoples R China 2.Univ Calgary, Dept Geosci, Calgary, AB T2N 1N4, Canada 3.Royal Tyrrell Museum Palaeontol, Box 7500, Drumheller, AB T0J 0Y0, Canada 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Ke, Yuzheng,Wu, Rui,Zelenitsky, Darla K.,et al. A large and unusually thick-shelled turtle egg with embryonic remains from the Upper Cretaceous of China[J]. PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2021,288(1957):9.
APA	Ke, Yuzheng.,Wu, Rui.,Zelenitsky, Darla K..,Brinkman, Don.,Hu, Jinfeng.,...&Han, Fenglu.(2021).A large and unusually thick-shelled turtle egg with embryonic remains from the Upper Cretaceous of China.PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,288(1957),9.
MLA	Ke, Yuzheng,et al."A large and unusually thick-shelled turtle egg with embryonic remains from the Upper Cretaceous of China".PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 288.1957(2021):9.