Comparative Endocranial Anatomy, Encephalization, and Phylogeny of Notoungulata (Placentalia, Mammalia)

doi:10.1007/s10914-021-09583-4

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	Comparative Endocranial Anatomy, Encephalization, and Phylogeny of Notoungulata (Placentalia, Mammalia)
	Perini, Fernando A.6,7; Macrini, Thomas E.5,6; Flynn, John J.4,6; Bamba, Kanvaly 3,6; Ni, Xijun 2,6; Croft, Darin A.3; Wyss, Andre R.1
刊名	JOURNAL OF MAMMALIAN EVOLUTION
	2021-11-23
页码	26
关键词	Endocranial anatomy CT imaging Encephalization Quotient (EQ) Phylogenetic Encephalization Quotient (PEQ) Meridiungulata Notoungulata Phylogeny
ISSN号	1064-7554
DOI	10.1007/s10914-021-09583-4
通讯作者	Perini, Fernando A.(faperini@ufmg.br)
英文摘要	Cranial endocasts are one of the most direct tools available to obtain information about the endocranial cavity of fossil mammals, but few anatomical comparisons have analyzed endocranial data within a phylogenetic framework. Our study combines analyses of new digital endocasts from high-resolution X-ray micro-computed tomography (mu CT) for two notoungulates, Cochilius sp. and Notostylops murinus, with data from published anatomical descriptions and endocasts (prior mu CT digital endocasts and natural and extracted plaster endocasts), resulting in 22 endocranial characters (11 new) scored on 20 notoungulates and five outgroups. These data permitted a comparative study of cranial endocasts of notoungulates, an enigmatic group of extinct South American mammals, shedding light on several important issues concerning their phylogenetic relationships. The new endocranial data were integrated into a craniodental and postcranial matrix, resulting in 259 characters across 65 taxa, the most comprehensive character and taxon sampling to date and the only one including a substantial suite of endocranial characters. We further performed ancestral state reconstructions for endocranial characters using parsimony optimization on the resulting phylogenetic trees. Body mass estimates and endocranial volumes were used to calculate Encephalization Quotients (EQs) and Phylogenetic Encephalization Quotients (PEQs), which then were optimized onto the phylogenies. Endocast data from ancestral character state reconstructions bear on relationships among meridiungulates, revealing that many endocast characters may be synapomorphies for Notoungulata and other clades within the group. Notoungulates, in general, display relatively low EQs when compared with Holarctic herbivorous mammals, potentially due to their long history of evolution in isolation in South America during the Cenozoic.
资助项目	NSF[DEB-0513476] ; Frick Postdoctoral Fellowship from the Department of Vertebrate Paleontology (Division of Paleontology) at the AMNH[2008-09] ; BIO[EF-0629811] ; National Council for Scientific and Technological Development -CNPq[422868/2016-7] ; NSF REU
WOS关键词	DIGITAL CRANIAL ENDOCAST ; INNER-EAR ; MONODELPHIS-DOMESTICA ; LATE OLIGOCENE ; MESOTHERIIDAE MAMMALIA ; BONY LABYRINTH ; LATE MIOCENE ; BODY-MASS ; EVOLUTION ; CHARACTERS
WOS研究方向	Evolutionary Biology ; Zoology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000721648000001
资助机构	NSF ; Frick Postdoctoral Fellowship from the Department of Vertebrate Paleontology (Division of Paleontology) at the AMNH ; BIO ; National Council for Scientific and Technological Development -CNPq ; NSF REU
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/19213]
专题	古脊椎动物与古人类研究所_图书馆1
通讯作者	Perini, Fernando A.
作者单位	1.Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA 2.Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Xi Zhi Men Wai St 142, Beijing 100044, Peoples R China 3.Case Western Reserve Univ, Sch Med, Dept Anat, 10900 Euclid Ave, Cleveland, OH 44106 USA 4.Amer Museum Nat Hist, Richard Gilder Grad Sch, Cent Pk West & 79th St, New York, NY 10024 USA 5.St Marys Univ, Dept Biol Sci, One Camino Santa Maria, San Antonio, TX 78228 USA 6.Amer Museum Nat Hist, Div Paleontol, Dept Vertebrate Paleontol, Cent Pk West & 79th St, New York, NY 10024 USA 7.Univ Fed Minas Gerais, Dept Zool, Lab Evolucao Mamiferos, Inst Ciencia Biol, BR-31270901 Belo Horizonte, MG, Brazil
推荐引用方式 GB/T 7714	Perini, Fernando A.,Macrini, Thomas E.,Flynn, John J.,et al. Comparative Endocranial Anatomy, Encephalization, and Phylogeny of Notoungulata (Placentalia, Mammalia)[J]. JOURNAL OF MAMMALIAN EVOLUTION,2021:26.
APA	Perini, Fernando A..,Macrini, Thomas E..,Flynn, John J..,Bamba, Kanvaly.,Ni, Xijun.,...&Wyss, Andre R..(2021).Comparative Endocranial Anatomy, Encephalization, and Phylogeny of Notoungulata (Placentalia, Mammalia).JOURNAL OF MAMMALIAN EVOLUTION,26.
MLA	Perini, Fernando A.,et al."Comparative Endocranial Anatomy, Encephalization, and Phylogeny of Notoungulata (Placentalia, Mammalia)".JOURNAL OF MAMMALIAN EVOLUTION (2021):26.