A late Paleocene probable metatherian (?deltatheroidan) survivor of the Cretaceous mass extinction

doi:10.1038/srep38547

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	A late Paleocene probable metatherian (?deltatheroidan) survivor of the Cretaceous mass extinction
	Ni, Xijun 1,2,3; Li, Qiang 1,2,3; Stidham, Thomas A.1,3; Li, Luzhou 1,3; Lu, Xiaoyu 1,3; Meng, Jin 4
刊名	SCIENTIFIC REPORTS
	2016-12-07
卷号	6
DOI	10.1038/srep38547
文献子类	Article
英文摘要	Deltatheroidans are primitive metatherian mammals (relatives of marsupials), previously thought to have become extinct during the Cretaceous mass extinction. Here, we report a tiny new deltatheroidan mammal (Gurbanodelta kara gen. et sp. nov.) discovered at the South Gobi locality in China (Xinjiang Province) that is the first Cenozoic record of this clade and renders Deltatheroida a Lazarus taxon (with a new record 10 million years younger than their supposed extinction). The vertebrate fauna associated with Gurbanodelta is most similar to that from the slightly older late Paleocene Subeng locality in Inner Mongolia. The upper molars of Gurbanodelta exhibit a broad stylar shelf with one prominent cusp (stylocone), and a paracone that is sharp and significantly taller than the metacone. The lower molar tentatively assigned to Gurbanodelta has a very small talonid without an entoconid. This combination of these features is known only in deltatheroidans. Phylogenetic analysis places Gurbanodelta as the sister taxon of the North American latest Cretaceous Nanocuris. Gurbanodelta is the smallestknown deltatheroidan, and roughly the same size as the smallest living marsupial. It is likely that the Gurbanodelta lineage dispersed between Asia and North America as part of known intercontinental mammalian dispersals in the late Paleocene, or possibly earlier.
WOS关键词	INNER-MONGOLIA ; CHINA ; PLACENTALS ; EVOLUTION ; SUBENG
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000389525100001
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences (CAS)(XDB03020000) ; National Basic Research Program of China(2012CB821904) ; CAS 100-talent Program ; National Natural Science Foundation of China(41472025)
内容类型	期刊论文
源URL	[http://124.16.247.212/handle/311034/7412]
专题	古脊椎动物与古人类研究所_图书馆1
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, 142 Xi Zhi Men Wai St, Beijing 100044, Peoples R China 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Amer Museum Nat Hist, Div Paleontol, Cent Pk West 79th St, New York, NY 10024 USA
推荐引用方式 GB/T 7714	Ni, Xijun,Li, Qiang,Stidham, Thomas A.,et al. A late Paleocene probable metatherian (?deltatheroidan) survivor of the Cretaceous mass extinction[J]. SCIENTIFIC REPORTS,2016,6.
APA	Ni, Xijun,Li, Qiang,Stidham, Thomas A.,Li, Luzhou,Lu, Xiaoyu,&Meng, Jin.(2016).A late Paleocene probable metatherian (?deltatheroidan) survivor of the Cretaceous mass extinction.SCIENTIFIC REPORTS,6.
MLA	Ni, Xijun,et al."A late Paleocene probable metatherian (?deltatheroidan) survivor of the Cretaceous mass extinction".SCIENTIFIC REPORTS 6(2016).