| 贵州关岭海龙类一新属种——双列齿凹棘龙 |
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| 引用本文： | 赵丽君,刘俊,李淳,何涛.贵州关岭海龙类一新属种——双列齿凹棘龙[J].古脊椎动物学报,2013,51(1):24-28. |
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| 作者姓名： | 赵丽君 刘俊 李淳 何涛 |
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| 作者单位： | 1. 浙江自然博物馆 杭州310012
2. 中国科学院古脊椎动物与古人类研究所,中国科学院脊椎动物演化与人类起源重点实验室 北京,100044 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(编号:KZCX2-YW-BR-07);国家自然科学基金(批准号:41172027)资助 |
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| 摘 要： | 简要记述了产自贵州关岭小凹组的一具基本完整的骨架,在此基础上建立了海龙类的一个新属种,双列齿凹棘龙(Concavispina biseridens)。新种最明显的鉴定特征是:上颌骨前端有两列钝的牙齿,后部无齿;脊椎神经棘背缘形成V形缺口。凹棘龙与新铺龙(Xinpusaurus)独有的衍征包括上颌骨前段背向弯曲,颈椎数目小于5枚,肱骨近端比远端宽。这些特征指示凹棘龙与新铺龙可能具有较近的亲缘关系。
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| 关 键 词： | 贵州关岭 三叠纪 海龙 |
A new thalattosaur, Concavispina biseridens gen. et sp. nov. from Guanling, Guizhou, China |
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| ZHAO Li-Jun,LIU Jun, LI Chun,HE Tao.A new thalattosaur, Concavispina biseridens gen. et sp. nov. from Guanling, Guizhou, China[J].Vertebrata Palasiatica,2013,51(1):24-28. |
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| Authors: | ZHAO Li-Jun LIU Jun LI Chun HE Tao |
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| Institution: | 1 (1 Zhejiang Museum of Natural History Hangzhou 310012) (2 Key Laboratory of Vertebrate Evolution and Human Origin of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences Beijing 100044 |
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| Abstract: | A new thalattosaur, Concavispina biseridens gen. et sp. nov., is established on the basis of a new skeleton from Xiaowa Formation of Guangling, Guizhou, China. It is diagnosed by two rows of blunt teeth on anterior part of maxilla and V-shaped notch on the dorsal margin of neural spines in dorsal vertebrae. It shares three derived characters only with Xinpusaurus: anterior end of maxilla curved dorsally; cervical vertebrae less than five; proximal end of humerus wider than distal end. This indicates that the new taxon may have a closely relationship with Xinpusaurus. |
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| Keywords: | Guanling Guizhou Triassic Thalattosauria |
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