A new stem-varanid lizard (Reptilia, Squamata) from the early Eocene of China

doi:10.1098/rstb.2021.0041

IVPP-IR > 中科院古脊椎所（2000年以后）

	A new stem-varanid lizard (Reptilia, Squamata) from the early Eocene of China
	Dong, Liping 1,2; Wang, Yuan-Qing1,2 ; Zhao, Qi 1,2; Vasilyan, Davit 3,4; Wang, Yuan 1,2; Evans, Susan E.5
	2022-03-28
发表期刊	PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
ISSN	0962-8436
卷号	377 期号:1847 页码:19
摘要	Monitor lizards (genus Varanus) are today distributed across Asia, Africa and Australasia and represent one of the most recognizable and successful lizard lineages. They include charismatic living species like the Komodo dragon of Indonesia and the even larger extinct Varanus prisca (Megalania) of Australia. The fossil record suggests that living varanids had their origins in a diverse assemblage of stem (varaniform) species known from the Late Cretaceous of China and Mongolia. However, determining the biogeographic origins of crown-varanids has proved problematic, with Asia, Africa and Australia each being proposed. The problem is complicated by the fragmentary nature of many attributed specimens, and the fact that the most widely accepted, and most complete, fossil of a stem-varanid, that of Saniwa ensidens, is from North America. In this paper, we describe a well-preserved skull and skeleton of a new genus of stem-varanid from the Eocene of China. Phylogenetic analysis places the new genus as the sister taxon of Varanus, suggesting that the transition from Cretaceous varaniform lizards to Varanus occurred in East Asia before the origin and dispersal of Varanus to other regions. The discovery of the new specimen thus fills an important gap in the fossil record of monitor lizards. The similar lengths of the fore- and hindlimbs in this new taxon are unusual among the total group Varanidae and suggest it may have had a different lifestyle, at least from the contemporaneous North American S. ensidens. This article is part of the theme issue 'The impact of Chinese palaeontology on evolutionary research'.
关键词	early Eocene China Varanidae evolution
DOI	10.1098/rstb.2021.0041
关键词[WOS]	COMPARATIVE MORPHOLOGY ; THERMAL MAXIMUM ; EVOLUTION ; RECORD ; SKULL ; BASIN ; SYSTEMATICS ; PHYLOGENY ; OLIGOCENE ; MIOCENE
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[41688103] ; Youth Innovation Promotion Association ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB 18000000] ; Swiss National Science Foundation[181041]
WOS研究方向	Life Sciences & Biomedicine - Other Topics
WOS类目	Biology
WOS记录号	WOS:000751802600006
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/311034/21484
专题	中科院古脊椎所（2000年以后）
通讯作者	Dong, Liping
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironment, Beijing, Peoples R China 3.Jurassica Museum, Porrentruy, Switzerland 4.Univ Fribourg, Dept Geosci, Fribourg, Switzerland 5.UCL, Dept Cell & Dev Biol, Ctr Integrat Anat, London, England
推荐引用方式 GB/T 7714	Dong, Liping,Wang, Yuan-Qing,Zhao, Qi,et al. A new stem-varanid lizard (Reptilia, Squamata) from the early Eocene of China[J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,2022,377(1847):19.
APA	Dong, Liping,Wang, Yuan-Qing,Zhao, Qi,Vasilyan, Davit,Wang, Yuan,&Evans, Susan E..(2022).A new stem-varanid lizard (Reptilia, Squamata) from the early Eocene of China.PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES,377(1847),19.
MLA	Dong, Liping,et al."A new stem-varanid lizard (Reptilia, Squamata) from the early Eocene of China".PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 377.1847(2022):19.

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