New basal synapsid supports Laurasian origin for therapsids

IVPP-IR > 中科院古脊椎所（2000年以后）

	New basal synapsid supports Laurasian origin for therapsids
	Liu, Jun1 ; Rubidge, Bruce 2; Li, Jinling 1; liujun@ivpp.ac.cn ; bruce.rubidge@wits.ac.za ; li.jinling@ivpp.ac.cn
	2009-09-01
发表期刊	ACTA PALAEONTOLOGICA POLONICA
ISSN	0567-7920
卷号	54 期号:3 页码:393-400
文章类型	Article
摘要	The distant evolutionary ancestry of mammals is documented by a rich therapsid fossil record. While sphenacodontid synapsids are considered the sister-group of therapsids, the place of origin of therapsids is an enigma, largely because of a long standing morphological and temporal gap (Olson's Gap) in their fossil record. We describe a new large predatory synapsid, Raranimus dashankouensis gen. et sp. nov., from the Middle Permian of Dashankou in China which has a unique combination of therapsid and sphenacodontid features. This specimen is of great significance as it is a basal therapsid which is the sister taxon to all other therapsids. The fact that it was found in association with Early Permian tetrapods (Anakamacops and Belebey) suggests that it is the oldest therapsid and provides the first evidence of therapsid-bearing rocks which cover Olson's Gap. It further supports that therapsids may have had a Laurasian rather than Gondwanan origin.
关键词	Therapsida Dashankou Permian Laurasia China
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
URL	查看原文
关键词[WOS]	PERMIAN CONTINENTAL STRATA ; SOUTH-AFRICA ; NORTH-AMERICA ; VERTEBRATE EVIDENCE ; REPTILE MACROLETER ; EASTERN-EUROPE ; BEAUFORT GROUP ; FAUNAS ; BIARMOSUCHIA ; MORPHOLOGY
收录类别	SCI
语种	英语
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:000270574400004
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4715
专题	中科院古脊椎所（2000年以后）古低等脊椎动物研究室
通讯作者	liujun@ivpp.ac.cn; bruce.rubidge@wits.ac.za; li.jinling@ivpp.ac.cn
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China 2.Univ Witwatersrand, Bernard Price Inst Palaeontol Res, Sch Geosci, ZA-2050 Johannesburg, Johannesburg, South Africa
推荐引用方式 GB/T 7714	Liu, Jun,Rubidge, Bruce,Li, Jinling,et al. New basal synapsid supports Laurasian origin for therapsids[J]. ACTA PALAEONTOLOGICA POLONICA,2009,54(3):393-400.
APA	Liu, Jun,Rubidge, Bruce,Li, Jinling,liujun@ivpp.ac.cn,bruce.rubidge@wits.ac.za,&li.jinling@ivpp.ac.cn.(2009).New basal synapsid supports Laurasian origin for therapsids.ACTA PALAEONTOLOGICA POLONICA,54(3),393-400.
MLA	Liu, Jun,et al."New basal synapsid supports Laurasian origin for therapsids".ACTA PALAEONTOLOGICA POLONICA 54.3(2009):393-400.

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