A new early Eocene deperetellid tapiroid illuminates the origin of Deperetellidae and the pattern of premolar molarization in Perissodactyla

doi:10.1371/journal.pone.0225045

IVPP-IR > 中科院古脊椎所（2000年以后）

	A new early Eocene deperetellid tapiroid illuminates the origin of Deperetellidae and the pattern of premolar molarization in Perissodactyla
	Bai, Bin1,2,3 ; Meng, Jin1,4,5 ; Mao, Fang-Yuan 1,2,4; Zhang, Zhao-Qun1,2,6 ; Wang, Yuan Qing 1,2,6
	2019-11-08
发表期刊	PLOS ONE
ISSN	1932-6203
卷号	14 期号:11 页码:26
摘要	Deperetellidae is a clade of peculiar, Asian endemic tapiroids from the early and middle Eocene. The previously published material mainly comprises maxillae, mandibles, and some postcranial elements. However, the absence of cranial materials and primitive representatives of the deperetellids obscures their phylogenetic relationships within Tapiroidea. Furthermore, derived deperetellids have completely molarized premolars, but the pattern of their evolution remains unclear. Here, we report a nearly complete skull and some carpals of a new basal deperetellid tapiroid, Irenolophus qii gen. et sp. nov., from the late early Eocene of the Erlian Basin, Inner Mongolia, China. We suggest that deperetellids (along with Tapiridae) probably also arose from some basal `helaletids', based on the reduced, flat, lingually depressed metacones on the upper molars, the trend towards the bilophodonty on the lower molars, and a shallow narial notch with the premaxilla in contact with the nasal. The molarization of the premolars in Deperetellidae from Irenolophus through Teleolophus to Deperetella was initiated and gradually enhanced by the separation between the paraconule and the protocone. That pattern differs from the protocone-hypocone separation in helaletids, tapirids, and most rhinoceroses, and the metaconule-derived pseudohypocone in amynodontids. However, the specific relationship of deperetellids within Tapiroidea and the roles of different patterns of premolar molarization in perissodactyl evolution need further and comprehensive study.
DOI	10.1371/journal.pone.0225045
关键词[WOS]	TOOTH ENAMEL ; MAMMALIA ; MIDDLE ; CLASSIFICATION ; PHYLOGENY
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; National Natural Science Foundation of China[41672014] ; National Natural Science Foundation of China[41572021] ; State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology, CAS)[163103] ; Division of Paleontology, American Museum of Natural History ; Special Fund for Fossil Excavation and Preparation, CAS ; National Natural Science Foundation of China[41472003] ; Youth Innovation Promotion Association, CAS[2017101]
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000532697200040
出版者	PUBLIC LIBRARY SCIENCE
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/17506
专题	中科院古脊椎所（2000年以后）
通讯作者	Bai, Bin; Meng, Jin; Wang, Yuan Qing
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 & Paleoenviroment, Beijing, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing, Peoples R China 4.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA 5.CUNY, Grad Ctr, Earth & Environm Sci, New York, NY 10016 USA 6.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Bai, Bin,Meng, Jin,Mao, Fang-Yuan,et al. A new early Eocene deperetellid tapiroid illuminates the origin of Deperetellidae and the pattern of premolar molarization in Perissodactyla[J]. PLOS ONE,2019,14(11):26.
APA	Bai, Bin,Meng, Jin,Mao, Fang-Yuan,Zhang, Zhao-Qun,&Wang, Yuan Qing.(2019).A new early Eocene deperetellid tapiroid illuminates the origin of Deperetellidae and the pattern of premolar molarization in Perissodactyla.PLOS ONE,14(11),26.
MLA	Bai, Bin,et al."A new early Eocene deperetellid tapiroid illuminates the origin of Deperetellidae and the pattern of premolar molarization in Perissodactyla".PLOS ONE 14.11(2019):26.

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