The Earliest Ursine Bear Demonstrates the Origin of Plant-Dominated Omnivory in Carnivora
文献类型：期刊论文
| 作者 | Jiangzuo, Qigao1,2,3,4; Flynn, John J.1 |
| 刊名 | ISCIENCE
 |
| 出版日期 | 2020-06-26 |
| 卷号 | 23期号:6页码:51 |
| DOI | 10.1016/j.isci.2020.101235 |
| 英文摘要 | 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. |
| WOS关键词 | R PACKAGE ; DIET ; CONSTRAINTS ; MORPHOLOGY ; EVOLUTION ; INFERENCE ; ECOLOGY ; MRBAYES ; PANDA ; BITE |
| 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 |
| 语种 | 英语 |
| WOS记录号 | WOS:000548239400007 |
| 出版者 | CELL PRESS |
| 源URL | [http://119.78.100.205/handle/311034/17793]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | Jiangzuo, Qigao |
| 作者单位 | 1.Amer Museum Nat Hist, Div Paleontol, New York, NY 10024 USA 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 3.CAS Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 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. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
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