New digital anatomical data of Keichousaurus hui (Reptilia: Sauropterygia) and its phylogenetic implication
文献类型：期刊论文
| 作者 | Xu, Jiayu2; Guo, Yu3; Ma, Yucong2; Wang, Wei1; Cheng, Long4; Han, Fenglu2 |
| 刊名 | PEERJ
 |
| 出版日期 | 2025-03-31 |
| 卷号 | 13页码:23 |
| 关键词 | Keichousaurus hui Marine reptile Middle Triassic Skull morphology Pachypleurosauria China |
| ISSN号 | 2167-8359 |
| DOI | 10.7717/peerj.19012 |
| 通讯作者 | Han, Fenglu(hanfl@cug.edu.cn) |
| 英文摘要 | Three complete skulls of Keichousaurus hui from the Middle Triassic Xingyi Fauna of southwestern China were examined using high-resolution computed tomography (CT) scanning. The CT images allow a few refinements and supplements in cranial anatomy. Some previously ambiguous anatomical characters were identified, including the presence of an L-shaped ectopterygoid that extends from the lateral side of the pterygoid and bends ventrally, the wedge-shaped posterolateral process of the frontal, the trapezoidal pterygoid for articulating with the palatine, and a rodlike basioccipital tuber that extends posterolaterally. These new features provide new detailed anatomical information for taxonomy. The new phylogenetic analysis of Sauropterygiformes places Keichousaurus as an eosauropterygian that is more basal than the monophyly which includes Nothosauridae and Pistosauroidea. Moreover, the result also suggests that Keichousaurus is more closely related to Chinese pachypleurosaurs-like eosauropterygians than to European pachypleurosaurs and more derived than other Chinese pachypleurosaurs-like forms. |
| WOS关键词 | EOSAUROPTERYGIAN DIAPSIDA SAUROPTERYGIA ; SEXUAL-DIMORPHISM ; CRANIAL ANATOMY ; MIDDLE ; PACHYPLEUROSAUR ; YUNNAN ; INFORMATION ; PLACODONTIA ; SIMOSAURUS ; MORPHOLOGY |
| 资助项目 | National Natural Science Foundation of China ; Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences and Yinghua NDT (Shanghai) Co., Ltd. |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:001468781800001 |
| 出版者 | PEERJ INC |
| 资助机构 | National Natural Science Foundation of China ; Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences and Yinghua NDT (Shanghai) Co., Ltd. |
| 源URL | [http://119.78.100.205/handle/311034/24732]  |
| 专题 | 中国科学院古脊椎动物与古人类研究所 |
| 通讯作者 | Han, Fenglu |
| 作者单位 | 1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing, Peoples R China 2.China Univ Geosci, Sch Earth Sci, Wuhan, Hubei, Peoples R China 3.Geol Museum China, Beijing, Peoples R China 4.China Geol Survey, Hubei Key Lab Paleontol & Geol Environm Evolut, Wuhan Ctr, Wuhan, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Jiayu,Guo, Yu,Ma, Yucong,et al. New digital anatomical data of Keichousaurus hui (Reptilia: Sauropterygia) and its phylogenetic implication[J]. PEERJ,2025,13:23. |
| APA | Xu, Jiayu,Guo, Yu,Ma, Yucong,Wang, Wei,Cheng, Long,&Han, Fenglu.(2025).New digital anatomical data of Keichousaurus hui (Reptilia: Sauropterygia) and its phylogenetic implication.PEERJ,13,23. |
| MLA | Xu, Jiayu,et al."New digital anatomical data of Keichousaurus hui (Reptilia: Sauropterygia) and its phylogenetic implication".PEERJ 13(2025):23. |
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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