| New specimens of Stenocybus acidentatus (Therapsida: Dinocephalia) from the Middle Permian Dashankou Fauna of China |
| |
| 作者姓名： | JIANG Shan and JI Shu-an |
| |
| 作者单位： | Institute of Geology, Chinese Academy of Geological Sciences; Key Laboratory of Stratigraphy and Paleontology, Ministry of Land and Resources; Beijing 100037, China |
| |
| 基金项目： | This paper was funded by the China Geological Survey (Grant No. 1212011120139). |
| |
| 摘 要： | The basal dinocephalian clade Stenocybusidae was known from two incomplete specimens representing one generus,Stenocybus,from Dashankou fanua in Yumen,Gansu Province of China.The holotype of Stenocybus acidentatus is laterally compressed,making some characters unclear.Here we describe two new specimens of Stenocybus acidentatus from the same locality,an anterior portion of skull with articulated jaws,and a right dentary with nearly complete dentition.They show some detailed features on the morphology of the premaxilla,maxilla,nasal,external nares and dentary.The phylogenetic relationship between Stenocybus acidentatus and the relatively large Sinophoneus yumenensis is still difficult to determine,and needs more new complete material and further evidences.
|
| 关 键 词： | 中二叠世 标本 山口 中国 动物群 横向压缩 细节特征 亲缘关系 |
| 收稿时间： | 9/2/2013 12:00:00 AM |
| 修稿时间： | 2014/5/15 0:00:00 |
New specimens of Stenocybus acidentatus （Therapsida： Dinocephalia） from the Middle Permian Dashankou Fauna of China |
| |
| Authors: | 《Acta Geologica Sinica》 |
| |
| Abstract: | The basal dinocephalian clade Stenocybusidae was known from two incomplete specimens representing one generus, Stenocybus, from Dashankou fanua in Yumen, Gansu Province of China. The holotype of Stenocybus acidentatus is laterally compressed, making some characters unclear. Here we describe two new specimens of Stenocybus acidentatus from the same locality, an anterior portion of skull with articulated jaws, and a right dentary with nearly complete dentition. They show some detailed features on the morphology of the premaxilla, maxilla, nasal, external nares and dentary. The phylogenetic relationship between Stenocybus acidentatus and the relatively large Sinophoneus yumenensis is still difficult to determine, and needs more new complete material and further evidences. |
| |
| Keywords: | Dinocephalia Stenocybusidae Dashankou Fauna Middle Permian |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《Acta Geologica Sinica》浏览原始摘要信息 |
| 点击此处可从《Acta Geologica Sinica》下载免费的PDF全文 |
|
