New freshwater plesiosaurian materials from the Middle Jurassic Xintiangou Formation of the Sichuan Basin, southwestern China
Abstract Sichuan Basin is very famous for the Mesozoic reptiles, especially the Jurassic dinosaurs. Here, we report some isolated plesiosaurian teeth and vertebrae newly excavated from the Middle Jurassic Xintiangou Formation in Yunyang county, Chongqing City, the northeastern region of the Sichuan...
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| Format: | Article |
| Language: | English |
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Elsevier
2020-08-01
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| Series: | Journal of Palaeogeography |
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| Online Access: | http://link.springer.com/article/10.1186/s42501-020-00072-y |
| _version_ | 1818489043556499456 |
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| author | Feng Zhang Hai-Dong Yu Can Xiong Zhao-Ying Wei Guang-Zhao Peng Xue-Fang Wei |
| author_facet | Feng Zhang Hai-Dong Yu Can Xiong Zhao-Ying Wei Guang-Zhao Peng Xue-Fang Wei |
| author_sort | Feng Zhang |
| collection | DOAJ |
| description | Abstract Sichuan Basin is very famous for the Mesozoic reptiles, especially the Jurassic dinosaurs. Here, we report some isolated plesiosaurian teeth and vertebrae newly excavated from the Middle Jurassic Xintiangou Formation in Yunyang county, Chongqing City, the northeastern region of the Sichuan Basin, southwestern China. The specimens are referred to Pliosauroidea based on the combination of the following features: the circular cross-section of the tooth crown, apicobasal ridges fully covering the enamel surface and reaching to the apex, the short and amphicoelous centrum, the centrum shorter than wide or tall, and the absence of a keel on the lateral surface of the cervical centrum. With the fragmentary nature, it is undetermined whether the Yunyang specimens belong to a known taxon or represent a new species of Plesiosauria. These plesiosaurian specimens further demonstrate that the freshwater plesiosaurians are common in the Jurassic deposits of the Sichuan Basin. For a comprehensive knowledge of the plesiosaurians of the basin in origin, distribution and diversity, to discover new and more complete specimens is necessarily the first priority. |
| first_indexed | 2024-12-10T16:58:28Z |
| format | Article |
| id | doaj.art-faf4b94991f444faae1d88fe0e26fa4d |
| institution | Directory Open Access Journal |
| issn | 2524-4507 |
| language | English |
| last_indexed | 2024-12-10T16:58:28Z |
| publishDate | 2020-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Palaeogeography |
| spelling | doaj.art-faf4b94991f444faae1d88fe0e26fa4d2022-12-22T01:40:38ZengElsevierJournal of Palaeogeography2524-45072020-08-019111110.1186/s42501-020-00072-yNew freshwater plesiosaurian materials from the Middle Jurassic Xintiangou Formation of the Sichuan Basin, southwestern ChinaFeng Zhang0Hai-Dong Yu1Can Xiong2Zhao-Ying Wei3Guang-Zhao Peng4Xue-Fang Wei5Chongqing Laboratory of Geoheritage Protection and Research, No. 208 Hydrogeological and Engineering Geological Team, Chongqing Bureau of Geological and Mineral Resource Exploration and DevelopmentChongqing Laboratory of Geoheritage Protection and Research, No. 208 Hydrogeological and Engineering Geological Team, Chongqing Bureau of Geological and Mineral Resource Exploration and DevelopmentChongqing Laboratory of Geoheritage Protection and Research, No. 208 Hydrogeological and Engineering Geological Team, Chongqing Bureau of Geological and Mineral Resource Exploration and DevelopmentChongqing Laboratory of Geoheritage Protection and Research, No. 208 Hydrogeological and Engineering Geological Team, Chongqing Bureau of Geological and Mineral Resource Exploration and DevelopmentZigong Dinosaur MuseumInstitute of Geology, Chinese Academy of Geological SciencesAbstract Sichuan Basin is very famous for the Mesozoic reptiles, especially the Jurassic dinosaurs. Here, we report some isolated plesiosaurian teeth and vertebrae newly excavated from the Middle Jurassic Xintiangou Formation in Yunyang county, Chongqing City, the northeastern region of the Sichuan Basin, southwestern China. The specimens are referred to Pliosauroidea based on the combination of the following features: the circular cross-section of the tooth crown, apicobasal ridges fully covering the enamel surface and reaching to the apex, the short and amphicoelous centrum, the centrum shorter than wide or tall, and the absence of a keel on the lateral surface of the cervical centrum. With the fragmentary nature, it is undetermined whether the Yunyang specimens belong to a known taxon or represent a new species of Plesiosauria. These plesiosaurian specimens further demonstrate that the freshwater plesiosaurians are common in the Jurassic deposits of the Sichuan Basin. For a comprehensive knowledge of the plesiosaurians of the basin in origin, distribution and diversity, to discover new and more complete specimens is necessarily the first priority.http://link.springer.com/article/10.1186/s42501-020-00072-yPlesiosauriaPliosauroideaMiddle JurassicXintiangou formationSichuan Basin |
| spellingShingle | Feng Zhang Hai-Dong Yu Can Xiong Zhao-Ying Wei Guang-Zhao Peng Xue-Fang Wei New freshwater plesiosaurian materials from the Middle Jurassic Xintiangou Formation of the Sichuan Basin, southwestern China Journal of Palaeogeography Plesiosauria Pliosauroidea Middle Jurassic Xintiangou formation Sichuan Basin |
| title | New freshwater plesiosaurian materials from the Middle Jurassic Xintiangou Formation of the Sichuan Basin, southwestern China |
| title_full | New freshwater plesiosaurian materials from the Middle Jurassic Xintiangou Formation of the Sichuan Basin, southwestern China |
| title_fullStr | New freshwater plesiosaurian materials from the Middle Jurassic Xintiangou Formation of the Sichuan Basin, southwestern China |
| title_full_unstemmed | New freshwater plesiosaurian materials from the Middle Jurassic Xintiangou Formation of the Sichuan Basin, southwestern China |
| title_short | New freshwater plesiosaurian materials from the Middle Jurassic Xintiangou Formation of the Sichuan Basin, southwestern China |
| title_sort | new freshwater plesiosaurian materials from the middle jurassic xintiangou formation of the sichuan basin southwestern china |
| topic | Plesiosauria Pliosauroidea Middle Jurassic Xintiangou formation Sichuan Basin |
| url | http://link.springer.com/article/10.1186/s42501-020-00072-y |
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