A re-assessment of the oldest therapsid Raranimus confirms its status as a basal member of the clade and fills Olson's gap
文献类型：期刊论文
| 作者 | Duhamel, A.2; Benoit, J.2; Rubidge, B. S.2; Liu, J.1
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| 刊名 | SCIENCE OF NATURE
 |
| 出版日期 | 2021-08-01 |
| 卷号 | 108期号:4页码:12 |
| 关键词 | Therapsid Olson's gap Trigeminal nerve |
| ISSN号 | 0028-1042 |
| DOI | 10.1007/s00114-021-01736-y |
| 通讯作者 | Duhamel, A.(alienor.duhamel@ens-lyon.org) |
| 英文摘要 | The non-mammalian therapsids comprise a paraphyletic assemblage of Permian-Jurassic synapsids closely related to mammals that includes six major clades of largely unresolved phylogenetic affinity. Understanding the early evolutionary radiation of therapsids is complicated by a gap in the fossil record during the Roadian (middle Permian) known as Olson's gap. Because of its early stratigraphic occurrence and its primitive features, Raranimus dashankouensis, from the Dashankou fauna (Rodian), Qingtoushan Formation (China), is currently considered the best candidate to fill this gap. However, it is known from only a single specimen, an isolated snout, which limits the amount of usable phylogenetic characters to reconstruct its affinities. In addition, understanding of the stratigraphy of the Qingtoushan Formation is poor. Here, we used CT scanning techniques to digitally reconstruct the bones and trigeminal canals of the snout of Raranimus in 3D. We confirm that Raranimus shares a high number of synapomorphies with more derived therapsids and is the only therapsid known so far to display a "pelycosaur"-like maxillary canal bearing a long caudal alveolar canal that gives off branches at regular intervals. This plesiomorphic feature supports the idea that Raranimus is basal to other therapsids. |
| WOS关键词 | MAMMAL-LIKE REPTILES ; SOUTH-AFRICAN KAROO ; TETRACERATOPS-INSIGNIS ; PHYLOGENETIC POSITION ; EARLY DIVERSIFICATION ; MORPHOLOGY ; EVOLUTION ; RADIATION ; SPECIMEN ; DINOCEPHALIA |
| 资助项目 | African Origins Program of the National Research Foundation ; DST-NRF Centre of Excellence in Palaeosciences ; Postgraduate Merit Award of the University of the Witwatersrand ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000660549800001 |
| 出版者 | SPRINGER HEIDELBERG |
| 资助机构 | African Origins Program of the National Research Foundation ; DST-NRF Centre of Excellence in Palaeosciences ; Postgraduate Merit Award of the University of the Witwatersrand ; Strategic Priority Research Program of Chinese Academy of Sciences |
| 源URL | [http://119.78.100.205/handle/311034/18346]  |
| 专题 | 古脊椎动物与古人类研究所_图书馆1 |
| 通讯作者 | Duhamel, A. |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 2.Univ Witwatersrand, Evolutionary Studies Inst, Johannesburg, South Africa |
| 推荐引用方式 GB/T 7714 | Duhamel, A.,Benoit, J.,Rubidge, B. S.,et al. A re-assessment of the oldest therapsid Raranimus confirms its status as a basal member of the clade and fills Olson's gap[J]. SCIENCE OF NATURE,2021,108(4):12. |
| APA | Duhamel, A.,Benoit, J.,Rubidge, B. S.,&Liu, J..(2021).A re-assessment of the oldest therapsid Raranimus confirms its status as a basal member of the clade and fills Olson's gap.SCIENCE OF NATURE,108(4),12. |
| MLA | Duhamel, A.,et al."A re-assessment of the oldest therapsid Raranimus confirms its status as a basal member of the clade and fills Olson's gap".SCIENCE OF NATURE 108.4(2021):12. |
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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