The Earliest Ursine Bear Demonstrates the Origin of Plant-Dominated Omnivory in Carnivora

doi:10.1016/j.isci.2020.101235

IVPP-IR > 中科院古脊椎所（2000年以后）

	The Earliest Ursine Bear Demonstrates the Origin of Plant-Dominated Omnivory in Carnivora
	Jiangzuo, Qigao 1,2,3,4; Flynn, John J.4
	2020-06-26
发表期刊	ISCIENCE
卷号	23 期号:6 页码:51
摘要	In Carnivora, increases in body size often lead to dietary specialization toward hypercarnivory. Ursine bears (Tremarctos and Ursus), however, are the only omnivorous Carnivora that evolved large body sizes (i.e., >50 kg). Traits contributing to their gigantism, and how those traits evolved, have never been studied. Here we propose that special dental characters of Ursinae (parallel buccal and lingual ridges) permit a sagittally oriented mastication associated with increasing emphasis on plant foods. This pattern can be traced back to a new early diverging bear of plant-dominated omnivorous diet, Aurorarctos tirawa gen. et sp. nov. from the late Middle Miocene of North America, which was supported as the earliest known ursine bear by phylogenetic analysis. The anatomical transition to increased masticatory efficiency, probably together with the ability to hibernate, helped bears break prior ecological limitations on body size and led to the evolution of a distinctive lineage of herbivorous-omnivorous, large-bodied Carnivora.
DOI	10.1016/j.isci.2020.101235
关键词[WOS]	R PACKAGE ; DIET ; CONSTRAINTS ; MORPHOLOGY ; EVOLUTION ; INFERENCE ; ECOLOGY ; MRBAYES ; PANDA ; BITE
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[41430102] ; China Scholarship Council ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070203] ; National Natural Science Foundation of China[41872005] ; Key Frontier Science Research Program of the Chinese Academy of Sciences[QYZDY-SSW-DQC-22] ; National Natural Science Foundation of China[41772018] ; Key Frontier Science Research Program of the Chinese Academy of Sciences[GJHZ1885] ; National Natural Science Foundation of China[41872001] ; Frick Fund of the Division of Paleontology at AMNH ; Paleontological Society student grant (USA)
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000548239400007
出版者	CELL PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/17794
专题	中科院古脊椎所（2000年以后）
通讯作者	Jiangzuo, Qigao
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA
推荐引用方式 GB/T 7714	Jiangzuo, Qigao,Flynn, John J.. The Earliest Ursine Bear Demonstrates the Origin of Plant-Dominated Omnivory in Carnivora[J]. ISCIENCE,2020,23(6):51.
APA	Jiangzuo, Qigao,&Flynn, John J..(2020).The Earliest Ursine Bear Demonstrates the Origin of Plant-Dominated Omnivory in Carnivora.ISCIENCE,23(6),51.
MLA	Jiangzuo, Qigao,et al."The Earliest Ursine Bear Demonstrates the Origin of Plant-Dominated Omnivory in Carnivora".ISCIENCE 23.6(2020):51.

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