Transitional mammalian middle ear from a new Cretaceous Jehol eutriconodont
文献类型：期刊论文
| 作者 | Meng, Jin1,2; Wang, Yuanqing2; Li, Chuankui2 |
| 刊名 | NATURE
 |
| 出版日期 | 2011-04-14 |
| 卷号 | 472期号:7342页码:181-185 |
| 文献子类 | Article |
| 英文摘要 | The transference of post-dentary jaw elements to the cranium of mammals as auditory ossicles is one of the central topics in evolutionary biology of vertebrates. Homologies of these bones among jawed vertebrates have long been demonstrated by developmental studies; but fossils illuminating this critical transference are sparse and often ambiguous. Here we report the first unambiguous ectotympanic (angular), malleus (articular and prearticular) and incus (quadrate) of an Early Cretaceous eutriconodont mammal from the Jehol Biota, Liaoning, China. The ectotympanic and malleus have lost their direct contact with the dentary bone but still connect the ossified Meckel's cartilage (OMC); we hypothesize that the OMC serves as a stabilizing mechanism bridging the dentary and the detached ossicles during mammalian evolution. This transitional mammalian middle ear narrows the morphological gap between the mandibular middle ear in basal mammaliaforms and the definitive mammalian middle ear (DMME) of extant mammals; it reveals complex changes contributing to the detachment of ear ossicles during mammalian evolution. |
| WOS关键词 | OSSIFIED MECKELS CARTILAGE ; EVOLUTIONARY DEVELOPMENT ; ORIGIN ; MORGANUCODON ; DIDELPHIDAE |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000289469100034 |
| 公开日期 | 2012-03-30 |
| 源URL | [http://119.78.100.205/handle/311034/2027]  |
| 专题 | 古脊椎动物与古人类研究所_古哺乳动物研究室 |
| 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 Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Jin,Wang, Yuanqing,Li, Chuankui. Transitional mammalian middle ear from a new Cretaceous Jehol eutriconodont[J]. NATURE,2011,472(7342):181-185. |
| APA | Meng, Jin,Wang, Yuanqing,&Li, Chuankui.(2011).Transitional mammalian middle ear from a new Cretaceous Jehol eutriconodont.NATURE,472(7342),181-185. |
| MLA | Meng, Jin,et al."Transitional mammalian middle ear from a new Cretaceous Jehol eutriconodont".NATURE 472.7342(2011):181-185. |
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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