| Transitional mammalian middle ear from a new Cretaceous Jehol eutriconodont | |
| Meng, Jin1,2; Wang, Yuanqing2; Li, Chuankui2 | |
| 2011-04-14 | |
| 发表期刊 | NATURE
 |
| 卷号 | 472期号:7342页码:181-185 |
| 文章类型 | Article |
| 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标题词 | Science & Technology |
| 关键词[WOS] | OSSIFIED MECKELS CARTILAGE ; EVOLUTIONARY DEVELOPMENT ; ORIGIN ; MORGANUCODON ; DIDELPHIDAE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Science & Technology - Other Topics |
| WOS类目 | Multidisciplinary Sciences |
| WOS记录号 | WOS:000289469100034 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/2027 |
| 专题 | 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. |
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| Transitional mammali（1030KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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