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石千峰龙属

石千峰龙属
化石时期:254–252.3 Ma
二叠纪晚期
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 爬行纲 Reptilia
演化支 副爬行动物 Parareptilia
目: 前棱蜥形目 Procolophonomorpha
科: 锯齿龙科 Pareiasauridae
属: 石千峰龙属 Shihtienfenia
Young & Yeh, 1963[1]
模式种
二叠石千峰龙
Shihtienfenia permica

Young & Yeh, 1963

石千峰龙属学名Shihtienfenia)是种已灭绝副爬行动物,是锯齿龙科的一属,生存于二叠纪晚期的中国[2]

发现

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化石发现于中国山西省忻州市西北部的保德县,地处鄂尔多斯盆地东缘,此前曾发现过脊椎、下颌、四肢骨头化石,2019年首次发现完整头骨。[3]

体征

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头骨长约40厘米,膜质骨突起形成长而尖的角,面颊上装饰有显著的锥型角,上颞骨(Supratemporal)角从头骨一角向侧后方伸出,副基蝶骨细长且腹面中间有凹沟,案骨加大并在中间相互接触,使后顶骨不参与形成头骨边缘,上颌齿齿冠扇形具有9-11个齿尖,下颌齿有中脊具17个齿尖。[3]

石千峰龙具有六节荐椎,而非其他锯齿龙类的四节荐椎,这可能导因于石千峰龙生存于不同于其他锯齿龙类的环境[2]

分类

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在1963年,杨钟健、叶祥奎命名这个物种。在1997年,石千峰龙被归类于锯齿龙科。

石千峰龙可能属于锯齿龙科的不同亚科。Oskar Kuhn在他的专题论文中,根据肠骨上缘平坦,将石千峰龙归类于锯齿龙科的锯齿龙亚科(Pareiasaurinae)。

2019年发现完整头骨后经鉴定与埃尔金龙关系较近。[3]

参考资料

[编辑]
  1. ^ Shihtienfenia. The Paleobiology Database. [February 2012]. 
  2. ^ 2.0 2.1 Pareiasauridae 互联网档案馆存档,存档日期2007-03-13.
  3. ^ 3.0 3.1 3.2 王, 军有; 伊, 剑; 刘, 俊. 中国第一个完整的锯齿龙头骨. 古生物学报. 2019, 58 (2) [2023-06-23]. ISSN 0001-6616. doi:10.19800/j.cnki.aps.2019.02.007. (原始内容存档于2023-06-23). 
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石千峰龙属
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