Assembly of modern mammal community structure driven by Late Cretaceous dental evolution, rise of flowering plants, and dinosaur demise
文献类型：期刊论文
| 作者 | Chen, Meng1,2; Stromberg, Caroline A. E.3,4; Wilson, Gregory P.3,4 |
| 刊名 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
 |
| 出版日期 | 2019-05-14 |
| 卷号 | 116期号:20页码:9931-9940 |
| 关键词 | Mesozoic mammaliaform mammal community ecological structure tribosphenic molar angiosperm diversification |
| ISSN号 | 0027-8424 |
| DOI | 10.1073/pnas.1820863116 |
| 英文摘要 | The long-standing view that Mesozoic mammaliaforms living in dinosaur-dominated ecosystems were ecologically constrained to small size and insectivory has been challenged by astonishing fossil discoveries over the last three decades. By studying these well-preserved early mammaliaform specimens, paleontologists now agree that mammaliaforms underwent ecomorphological diversification during the Mesozoic Era. This implies that Mesozoic mammaliaform communities had ecological structure and breadth that were comparable to today's small-bodied mammalian communities. However, this hypothesis remains untested in part because the primary focus of most studies is on individual taxa. Here, we present a study quantifying the ecological structure of Mesozoic mammaliaform communities with the aim of identifying evolutionary and ecological drivers that influenced the deep-time assembly of small-bodied mammaliaform communities. We used body size, dietary preference, and locomotor mode to establish the ecospace occupation of 98 extant, small-bodied mammalian communities from diverse biomes around the world. We calculated ecological disparity and ecological richness to measure the magnitude of ecological differences among species in a community and the number of different eco-cells occupied by species of a community, respectively. This modern dataset served as a reference for analyzing five exceptionally preserved, extinct mammaliaform communities (two Jurassic, two Cretaceous, one Eocene) from Konservat-Lagerstatten. Our results indicate that the interplay of at least three factors, namely the evolution of the tribosphenic molar, the ecological rise of angiosperms, and potential competition with other vertebrates, may have been critical in shaping the ecological structure of small-bodied mammaliaform communities through time. |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000467804000043 |
| 出版者 | NATL ACAD SCIENCES |
| 源URL | [http://ir.nigpas.ac.cn/handle/332004/22366]  |
| 专题 | 中国科学院南京地质古生物研究所 |
| 作者单位 | 1.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Jiangsu, Peoples R China; 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China; 3.Univ Washington, Dept Biol, Seattle, WA 98195 USA; 4.Univ Washington, Burke Museum Nat Hist & Culture, Seattle, WA 98195 USA |
| 推荐引用方式 GB/T 7714 | Chen, Meng,Stromberg, Caroline A. E.,Wilson, Gregory P.. Assembly of modern mammal community structure driven by Late Cretaceous dental evolution, rise of flowering plants, and dinosaur demise[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2019,116(20):9931-9940. |
| APA | Chen, Meng,Stromberg, Caroline A. E.,&Wilson, Gregory P..(2019).Assembly of modern mammal community structure driven by Late Cretaceous dental evolution, rise of flowering plants, and dinosaur demise.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,116(20),9931-9940. |
| MLA | Chen, Meng,et al."Assembly of modern mammal community structure driven by Late Cretaceous dental evolution, rise of flowering plants, and dinosaur demise".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116.20(2019):9931-9940. |
入库方式： OAI收割
来源：南京地质古生物研究所
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