KMS Institute of Vertebrate Paleontology and Paleoanthropology
| A new hupehsuchian (Reptilia: Ichthyosauromorpha) with widely spaced autopodium from the marine Lower Triassic of South China | |
Qiao, Yu1,2,3; Iijima, Masaya4,5; Liu, Jun2
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| 2025-12-31 | |
| 发表期刊 | JOURNAL OF SYSTEMATIC PALAEONTOLOGY
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| ISSN | 1477-2019 |
| 卷号 | 23期号:1页码:8 |
| 摘要 | Hupehsuchia is a group of marine reptiles from the uppermost Lower Triassic of South China, known for their segmented neural spines covered by dermal ossicles and polydactyl forelimbs. Although five genera and species are currently known for this group, our understanding of their true diversity is limited. In this study, we report a new hupehsuchian, Lentamanusuchus hubeiensis gen. et sp. nov., based on the combination of unique characters in the trunk region and forelimb. These include widely spaced autopodial elements, an extra distal carpal and metacarpal, and a two-layered dermal armour. Phylogenetic analysis recovered the new species as a sister taxon to Parahupehsuchinae within Hupehsuchidae, supporting the gradual addition of extra carpal and digital elements in hupehsuchians. The widely spaced autopodia of Lentamanusuchus hubeiensis represent previously unknown morphologies in hupehsuchians. The wide spacing of the proximal autopodia, along with hyperphalangy, may help smooth the paddle surface to reduce vortices during wrist and proximal digit flexion and extension while swimming. Alternatively, it could result from reduced ossification of manual elements due to diminished muscular control in the manus.https://zoobank.org/urn:lsid:zoobank.org:pub:32503E51-083A-482D-AEFF-4015621A6870 |
| 关键词 | convergent evolution marine reptiles aquatic adaptation cetaceans |
| DOI | 10.1080/14772019.2025.2560884 |
| 关键词[WOS] | EVOLUTION ; LIMB |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | [41772003]###3472 ; [42172026]###3471 ; Basic Research Support Program for Excellent Young Teachers in Provincial Undergraduate Universities in Heilongjiang Province[YQJH2024048]###3470 ; Natural Science Foundation of Anhui Province[2408085J022]###3469 ; National Natural Science Foundation of China###1019 |
| WOS研究方向 | Evolutionary Biology ; Paleontology |
| WOS类目 | Evolutionary Biology ; Paleontology |
| WOS记录号 | WOS:001588494900001 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/24926 |
| 专题 | 中国科学院古脊椎动物与古人类研究所 |
| 通讯作者 | Liu, Jun |
| 作者单位 | 1.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China 2.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Anhui, Peoples R China 3.Northeast Petr Univ, Sch Earth Sci, State Key Lab Continental Shale Oil, Daqing 163318, Heilongjiang, Peoples R China 4.Chinese Acad Sci, Key Lab Vertebrate Evolut & Human Origins, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China 5.Univ Tokyo, Grad Sch Frontier Sci, Dept Nat Environm Studies, Kashiwa 2770882, Japan |
| 推荐引用方式 GB/T 7714 | Qiao, Yu,Iijima, Masaya,Liu, Jun. A new hupehsuchian (Reptilia: Ichthyosauromorpha) with widely spaced autopodium from the marine Lower Triassic of South China[J]. JOURNAL OF SYSTEMATIC PALAEONTOLOGY,2025,23(1):8. |
| APA | Qiao, Yu,Iijima, Masaya,&Liu, Jun.(2025).A new hupehsuchian (Reptilia: Ichthyosauromorpha) with widely spaced autopodium from the marine Lower Triassic of South China.JOURNAL OF SYSTEMATIC PALAEONTOLOGY,23(1),8. |
| MLA | Qiao, Yu,et al."A new hupehsuchian (Reptilia: Ichthyosauromorpha) with widely spaced autopodium from the marine Lower Triassic of South China".JOURNAL OF SYSTEMATIC PALAEONTOLOGY 23.1(2025):8. |
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