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| DOI | 10.1126/science.aaz9431 |
| Marginal dentition and multiple dermal jawbones as the ancestral condition of jawed vertebrates | |
| Vaškaninová V.; Chen D.; Tafforeau P.; Johanson Z.; Ekrt B.; Blom H.; Ahlberg P.E. | |
| 发表日期 | 2020 |
| ISSN | 10959203 |
| 起始页码 | 211 |
| 结束页码 | 216 |
| 卷号 | 369期号:6500 |
| 英文摘要 | The dentitions of extant fishes and land vertebrates vary in both pattern and type of tooth replacement. It has been argued that the common ancestral condition likely resembles the nonmarginal, radially arranged tooth files of arthrodires, an early group of armoured fishes. We used synchrotron microtomography to describe the fossil dentitions of so-called acanthothoracids, the most phylogenetically basal jawed vertebrates with teeth, belonging to the genera Radotina, Kosoraspis, and Tlamaspis (from the Early Devonian of the Czech Republic). Their dentitions differ fundamentally from those of arthrodires; they are marginal, carried by a cheekbone or a series of short dermal bones along the jaw edges, and teeth are added lingually as is the case in many chondrichthyans (cartilaginous fishes) and osteichthyans (bony fishes and tetrapods). We propose these characteristics as ancestral for all jawed vertebrates. Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. |
| 关键词 | anatomy and histologyanimalclassificationCzech Republicdentitionelectron tomographyevolutionfossiljawphylogenysynchrotrontoothvertebrateAnimalsBiological EvolutionCzech RepublicDentitionElectron Microscope TomographyFossilsJawPhylogenySynchrotronsToothVertebrates |
| 语种 | 英语 |
| 来源机构 | Science (New York, N.Y.) |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/133349 |
| 推荐引用方式 GB/T 7714 | Vaškaninová V.,Chen D.,Tafforeau P.,et al. Marginal dentition and multiple dermal jawbones as the ancestral condition of jawed vertebrates[J]. Science (New York, N.Y.),2020,369(6500). |
| APA | Vaškaninová V..,Chen D..,Tafforeau P..,Johanson Z..,Ekrt B..,...&Ahlberg P.E..(2020).Marginal dentition and multiple dermal jawbones as the ancestral condition of jawed vertebrates.,369(6500). |
| MLA | Vaškaninová V.,et al."Marginal dentition and multiple dermal jawbones as the ancestral condition of jawed vertebrates".369.6500(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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