A new juvenile sauropod specimen from the Middle Jurassic Dongdaqiao Formation of East Tibet
文献类型：期刊论文
| 作者 | An, Xianyin6; Xu, Xing4,5 ; Han, Fenglu3; Sullivan, Corwin1,2; Wang, Qiyu6; Li, Yong6; Wang, Dongbing6; Wang, Baodi6; Hu, Jinfeng3
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| 刊名 | PEERJ
 |
| 出版日期 | 2023-03-22 |
| 卷号 | 11页码:23 |
| ISSN号 | 2167-8359 |
| 关键词 | Middle Jurassic Tibet Sauropoda |
| DOI | 10.7717/peerj.14982 |
| 通讯作者 | Han, Fenglu(hanfl@cug.edu.cn) |
| 英文摘要 | Jurassic strata are widely distributed in the eastern part of Tibet Autonomous Region, and have yielded many dinosaur bones. However, none of these specimens has been studied extensively, and some remain unprepared. Here we provide a detailed description of some new sauropod material, including several cervical vertebrae and a nearly complete scapula, recovered from the Middle Jurassic of Chaya County, East Tibet. The cervical vertebrae have short centra that bear ventral midline keels, as in many non-neosauropod sauropods such as Shunosaurus. Moreover, the cervical centra display deep lateral excavations, partitioned by a septum. The scapula has proximal and distal ends that are both expanded as in mamenchisaurids and neosauropods. However, relatively small body size and lack of fusion of neurocentral sutures in the cervical vertebrae suggest that the available material is from a juvenile, and the length of the cervical centra may have increased relative to the size of the rest of the skeleton in later ontogenetic stages. Phylogenetic analysis provides limited evidence that the new Tibetan sauropod specimen belongs to Eusauropoda, being more derived than Shunosaurus, but is basal to Mamenchisauridae. The new material provides important information on the morphological transition between Shunosaurus and mamenchisaurids, and extends the known biogeographic range of early-diverging sauropods in the Middle Jurassic of East Asia. |
| WOS关键词 | PHYLOGENETIC-RELATIONSHIPS ; DINOSAURIA SAUROPODA ; YUNNAN PROVINCE ; ANATOMY ; REASSESSMENT ; OSTEOLOGY |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | PEERJ INC |
| WOS记录号 | WOS:000980425000002 |
| 源URL | [http://119.78.100.205/handle/311034/22476]  |
| 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.Philip J Currie Dinosaur Museum, Wembley, AB, Canada 2.Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada 3.China Univ Geosci Wuhan, Sch Earth Sci, Wuhan, Hubei, Peoples R China 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China 5.Yunnan Univ, Centre Vertebrate Evolutionary Biol, Kunming, Yunnan, Peoples R China 6.Chengdu Ctr China Geol Survey, Chengdu, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | An, Xianyin,Xu, Xing,Han, Fenglu,et al. A new juvenile sauropod specimen from the Middle Jurassic Dongdaqiao Formation of East Tibet[J]. PEERJ,2023,11:23. |
| APA | An, Xianyin.,Xu, Xing.,Han, Fenglu.,Sullivan, Corwin.,Wang, Qiyu.,...&Hu, Jinfeng.(2023).A new juvenile sauropod specimen from the Middle Jurassic Dongdaqiao Formation of East Tibet.PEERJ,11,23. |
| MLA | An, Xianyin,et al."A new juvenile sauropod specimen from the Middle Jurassic Dongdaqiao Formation of East Tibet".PEERJ 11(2023):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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