| A Silurian placoderm with osteichthyan-like marginal jaw bones | |
Zhu, Min1 ; Yu, Xiaobo1,2; Ahlberg, Per Erik3; Choo, Brian1; Lu, Jing1; Qiao, Tuo1; Qu, Qingming3; Zhao, Wenjin1; Jia, Liantao1; Blom, Henning3; Zhu, You'an1; [email protected]
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| 2013-10-10 | |
| 发表期刊 | NATURE
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| ISSN | 0028-0836 |
| 卷号 | 502期号:7470页码:0 |
| 文章类型 | Article |
| 摘要 | The gnathostome (jawed vertebrate) crown group comprises two extant clades with contrasting character complements. Notably, Chondrichthyes (cartilaginous fish) lack the large dermal bones that characterize Osteichthyes (bony fish and tetrapods). The polarities of these differences, and the morphology of the last common ancestor of crown gnathostomes, are the subject of continuing debate. Here we describe a three-dimensionally preserved 419-million-year-old placoderm fish from the Silurian of China that represents the first stem gnathostome with dermal marginal jaw bones (premaxilla, maxilla and dentary), features previously restricted to Osteichthyes. A phylogenetic analysis places the new form near the top of the gnathostome stem group but does not fully resolve its relationships to other placoderms. The analysis also assigns all acanthodians to the chondrichthyan stem group. These results suggest that the last common ancestor of Chondrichthyes and Osteichthyes had a macromeric dermal skeleton, and provide a new framework for studying crown gnathostome divergence. |
| 关键词 | Fishes Ptyctodontida Information Inference Mrbayes Origin |
| WOS标题词 | Science & Technology |
| URL | 查看原文 |
| 关键词[WOS] | FISHES ; PTYCTODONTIDA ; INFORMATION ; INFERENCE ; MRBAYES ; ORIGIN |
| 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:000325436100041 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/4103 |
| 专题 | 古低等脊椎动物研究室 |
| 通讯作者 | [email protected] |
| 作者单位 | 1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 2.Kean Univ, Dept Biol Sci, Union, NJ 07083 USA 3.Uppsala Univ, Dept Organismal Biol, Evolutionary Biol Ctr, Subdept Evolut & Dev, S-75236 Uppsala, Sweden |
| 推荐引用方式 GB/T 7714 | Zhu, Min,Yu, Xiaobo,Ahlberg, Per Erik,et al. A Silurian placoderm with osteichthyan-like marginal jaw bones[J]. NATURE,2013,502(7470):0. |
| APA | Zhu, Min.,Yu, Xiaobo.,Ahlberg, Per Erik.,Choo, Brian.,Lu, Jing.,[email protected].(2013).A Silurian placoderm with osteichthyan-like marginal jaw bones.NATURE,502(7470),0. |
| MLA | Zhu, Min,et al."A Silurian placoderm with osteichthyan-like marginal jaw bones".NATURE 502.7470(2013):0. |
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| zhu2013.pdf（1835KB） | 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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