Revision of Chunerpeton tianyiense (Lissamphibia, Caudata): Is it a cryptobranchid salamander?

doi:10.1016/j.palwor.2020.12.001

IVPP-IR > 中科院古脊椎所（2000年以后）

	Revision of Chunerpeton tianyiense (Lissamphibia, Caudata): Is it a cryptobranchid salamander?
	Rong, Yu-Fen 1,2,3,4,5; Vasilyan, Davit 4,5; Dong, Li-Ping 1,3; Wang, Yuan 1,3
	2021-12-01
发表期刊	PALAEOWORLD
ISSN	1871-174X
卷号	30 期号:4 页码:708-723
通讯作者	Rong, Yu-Fen(rongyufen@ivpp.ac.cn)
摘要	Lacustrine deposits of Juro-Cretaceous age in northeastern China have yielded some of the best-preserved fossils of early crown salamanders. One of those taxa, Chunerpeton tianyiense, has been considered as a crown or stem member of the family Cryptobranchidae, significant for implying a long evolutionary history for cryptobranchids and for calibrating the molecular clock of Caudata evolution. Building on the most recent large-scale phylogenetic analysis of relationships among fossil and recent salamanders and utilizing new specimens of Chunerpeton, we update the osteological description and diagnosis for Chunerpeton and reconsider its phylogenetic relationships. On the basis of recently collected Chunerpeton skeletons from the type locality at Daohugou, Inner Mongolia, China and available literature, we update the taxon-character matrix and run phylogenetic analyses with constraints on the relationships among families using a molecular backbone. We redescribe the osteology of Chunerpeton, revise and identify some new characters including large anterodorsal fenestra bordered by paired premaxillae, nasals, and frontals; nasals separate and wider than frontal; contact between nasal and prefrontal present; lacrimal present; and contact between pterygoid and parasphenoid absent. Osteological comparisons between Chunerpeton and living cryptobranchids reveal a suite of distinct differences in snout shape and in configurations, positions, and contacts of certain skull bones. Our phylogenetic analyses consistently place Chunerpeton as a stem Caudata outside of Cryptobranchidae and crown salamanders. Exclusion of Chunerpeton from Cryptobranchidae will require reconsideration of the origin time for Cryptobranchidae and recalibration of the molecular clock for the whole caudatan tree. (C) 2020 The Authors. Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS.
关键词	Chunerpeton Cryptobranchidae China Late Jurassic Osteology Phylogeny
DOI	10.1016/j.palwor.2020.12.001
关键词[WOS]	JEHOLOTRITON-PARADOXUS ; INNER-MONGOLIA ; AMPHIBIA ; PHYLOGENY ; DIVERSIFICATION ; URODELA
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18000000] ; National Natural Science Foundation of China[41688103] ; Swiss National Science Foundation[181041] ; China Scholarship Council ; Swiss Government Excellence Scholarship (2018-2019)
项目资助者	Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Swiss National Science Foundation ; China Scholarship Council ; Swiss Government Excellence Scholarship (2018-2019)
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000712265800010
出版者	ELSEVIER
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/19074
专题	中科院古脊椎所（2000年以后）
通讯作者	Rong, Yu-Fen
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 4.JURASSICA Museum, Porrentruy, Switzerland 5.Univ Fribourg, Fribourg, Switzerland
推荐引用方式 GB/T 7714	Rong, Yu-Fen,Vasilyan, Davit,Dong, Li-Ping,et al. Revision of Chunerpeton tianyiense (Lissamphibia, Caudata): Is it a cryptobranchid salamander?[J]. PALAEOWORLD,2021,30(4):708-723.
APA	Rong, Yu-Fen,Vasilyan, Davit,Dong, Li-Ping,&Wang, Yuan.(2021).Revision of Chunerpeton tianyiense (Lissamphibia, Caudata): Is it a cryptobranchid salamander?.PALAEOWORLD,30(4),708-723.
MLA	Rong, Yu-Fen,et al."Revision of Chunerpeton tianyiense (Lissamphibia, Caudata): Is it a cryptobranchid salamander?".PALAEOWORLD 30.4(2021):708-723.