Hummingbird-sized dinosaur from the Cretaceous period of Myanmar
文献类型：期刊论文
| 作者 | Xing, Lida1,2; O'Connor, Jingmai K.3,4; Schmitz, Lars5,6,7,8; Chiappe, Luis M.5; McKellar, Ryan C.9,10; Yi, Qiru11; Li, Gang11,12 |
| 刊名 | NATURE
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 579期号:7798页码:245-+ |
| ISSN号 | 0028-0836 |
| DOI | 10.1038/s41586-020-2068-4 |
| 通讯作者 | O'Connor, Jingmai K.(jingmai@ivpp.ac.cn) |
| 英文摘要 | Skeletal inclusions in approximately 99-million-year-old amber from northern Myanmar provide unprecedented insights into the soft tissue and skeletal anatomy of minute fauna, which are not typically preserved in other depositional environments(1-3). Among a diversity of vertebrates, seven specimens that preserve the skeletal remains of enantiornithine birds have previously been described(1,4-8), all of which (including at least one seemingly mature specimen) are smaller than specimens recovered from lithic materials. Here we describe an exceptionally well-preserved and diminutive bird-like skull that documents a new species, which we name Oculudentavis khaungraae gen. et sp. nov. The find appears to represent the smallest known dinosaur of the Mesozoic era, rivalling the bee hummingbird (Mellisuga helenae)-the smallest living bird-in size. The O. khaungraae specimen preserves features that hint at miniaturization constraints, including a unique pattern of cranial fusion and an autapomorphic ocular morphology(9) that resembles the eyes of lizards. The conically arranged scleral ossicles define a small pupil, indicative of diurnal activity. Miniaturization most commonly arises in isolated environments, and the diminutive size of Oculudentavis is therefore consistent with previous suggestions that this amber formed on an island within the Trans-Tethyan arc(10). The size and morphology of this species suggest a previously unknown bauplan, and a previously undetected ecology. This discovery highlights the potential of amber deposits to reveal the lowest limits of vertebrate body size. |
| WOS关键词 | BURMESE AMBER ; BODY-SIZE ; ENANTIORNITHINE ; MINIATURIZATION ; MORPHOLOGY ; EVOLUTION ; AGE |
| 资助项目 | National Natural Science Foundation of China[41888101] ; National Natural Science Foundation of China[41790455] ; National Natural Science Foundation of China[41772008] ; National Geographic Society[EC0768-15] ; Natural Sciences and Engineering Research Council of Canada[2015-00681] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000519378900025 |
| 出版者 | NATURE PUBLISHING GROUP |
| 资助机构 | National Natural Science Foundation of China ; National Geographic Society ; Natural Sciences and Engineering Research Council of Canada |
| 源URL | [http://119.78.100.205/handle/311034/17244]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | O'Connor, Jingmai K. |
| 作者单位 | 1.China Univ Geosci, State Key Lab Biogeol & Environm Geol, Beijing, Peoples R China 2.China Univ Geosci, Sch Earth Sci & Resources, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 5.Nat Hist Museum Los Angeles Cty, Dinosaur Inst, Los Angeles, CA USA 6.Claremont Mckenna Coll, WM Keck Sci Dept, Claremont, CA 91711 USA 7.Scripps Coll, WM Keck Sci Dept, Claremont, CA 91711 USA 8.Pitzer Coll, WM Keck Sci Dept, Claremont, CA 91711 USA 9.Royal Saskatchewan Museum, Regina, SK, Canada 10.Univ Regina, Dept Biol, Regina, SK, Canada |
| 推荐引用方式 GB/T 7714 | Xing, Lida,O'Connor, Jingmai K.,Schmitz, Lars,et al. Hummingbird-sized dinosaur from the Cretaceous period of Myanmar[J]. NATURE,2020,579(7798):245-+. |
| APA | Xing, Lida.,O'Connor, Jingmai K..,Schmitz, Lars.,Chiappe, Luis M..,McKellar, Ryan C..,...&Li, Gang.(2020).Hummingbird-sized dinosaur from the Cretaceous period of Myanmar.NATURE,579(7798),245-+. |
| MLA | Xing, Lida,et al."Hummingbird-sized dinosaur from the Cretaceous period of Myanmar".NATURE 579.7798(2020):245-+. |
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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