干旱区生态环境知识资源中心(Arid): Combined data analysis of fossil and living mammals: a Paleogene sister taxon of Placentalia and the antiquity of Marsupialia

Arid

DOI	10.1111/cla.12499
	Combined data analysis of fossil and living mammals: a Paleogene sister taxon of Placentalia and the antiquity of Marsupialia
	Velazco, Paul M.; Buczek, Alexandra J.; Hoffman, Eva; Hoffman, Devin K.; O'Leary, Maureen A.; Novacek, Michael J.
通讯作者	Velazco, PM (corresponding author)，Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA. ; Velazco, PM (corresponding author)，Arcadia Univ, Dept Biol, Glenside, PA 19038 USA.
来源期刊	CLADISTICS
ISSN	0748-3007
EISSN	1096-0031
出版年	2022-01
英文摘要	The Cretaceous-Paleogene (KPg) boundary, one of Earth's five major extinction events, occurred just before the appearance of Placentalia in the fossil record. The Gobi Desert, Mongolia and the Western Interior of North America have important fossil mammals occurring just before and after the KPg boundary (e.g. Prodiacodon, Deltatheridium) that have yet to be phylogenetically tested in a character-rich context with molecular data. We present here phylogenetic analyses of >6000 newly scored anatomical observations drawn from six untested fossils and added to the largest existing morphological matrix for mammals. These data are combined with sequence data from 27 nuclear genes. Results show the existence of a new eutherian sister clade to Placentalia, which we name and characterize. The extinct clade Leptictidae is part of this placental sister clade, indicating that the sister clade survived the KPg event to co-exist in ancient ecosystems during the Paleogene radiation of placentals. Analysing the Cretaceous metatherian Deltatheridium in this character-rich context reveals it is a member of Marsupialia, a finding that extends the minimum age of Marsupialia before the KPg boundary. Numerous shared-derived features from multiple anatomical systems support the assignment of Deltatheridium to Marsupialia. Computed tomography scans of exquisite new specimens better document the marsupial-like dental replacement pattern of Deltatheridium. The new placental sister clade has both Asian and North American species, and is ancestrally characterized by shared derived features such as a hind limb modified for saltatorial locomotion.
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000749660700001
WOS关键词	UKHAATHERIUM-NESSOVI EUTHERIA ; ORIGIN ; BIOGEOGRAPHY ; EVOLUTION ; RADIATION ; MONGOLIA ; SKULL ; TREE ; ASIA
WOS类目	Evolutionary Biology ; Zoology
WOS研究方向	Evolutionary Biology ; Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377063
作者单位	[Velazco, Paul M.; Buczek, Alexandra J.; Hoffman, Eva; O'Leary, Maureen A.; Novacek, Michael J.] Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA; [Velazco, Paul M.] Arcadia Univ, Dept Biol, Glenside, PA 19038 USA; [Hoffman, Devin K.] Virginia Tech, Dept Geosci, Blacksburg, VA 24060 USA; [O'Leary, Maureen A.] SUNY Stony Brook, Renaissance Sch Med, Dept Anat Sci, Stony Brook, NY 11794 USA
推荐引用方式 GB/T 7714	Velazco, Paul M.,Buczek, Alexandra J.,Hoffman, Eva,et al. Combined data analysis of fossil and living mammals: a Paleogene sister taxon of Placentalia and the antiquity of Marsupialia[J],2022.
APA	Velazco, Paul M.,Buczek, Alexandra J.,Hoffman, Eva,Hoffman, Devin K.,O'Leary, Maureen A.,&Novacek, Michael J..(2022).Combined data analysis of fossil and living mammals: a Paleogene sister taxon of Placentalia and the antiquity of Marsupialia.CLADISTICS.
MLA	Velazco, Paul M.,et al."Combined data analysis of fossil and living mammals: a Paleogene sister taxon of Placentalia and the antiquity of Marsupialia".CLADISTICS (2022).