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卡拉瓦亚龙属

卡拉瓦亚龙属
化石时期:白垩纪阿普第阶
卡拉瓦亚龙的头颅骨
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 爬行纲 Reptilia
目: 蛇颈龙目 Plesiosauria
科: 薄板龙科 Elasmosauridae
属: 卡拉瓦亚龙属 Callawayasaurus
Carpenter英语Kenneth Carpenter, 1999
模式种
哥伦比亚卡拉瓦亚龙
Callawayasaurus colombiensis

Wells, 1962
异名
  • Alzadasaurus colombiensis
    Wells, 1962
  • Callawayosaurus 印刷笔误

卡拉瓦亚龙属学名Callawayasaurus)是种海生爬行动物,属于蛇颈龙亚目薄板龙科。卡拉瓦亚龙的化石最初由塞缪尔·保罗·威尔士在1962年发现,原本被归类为Alzadasaurus的一个种,在1999年由肯尼斯·卡本特英语Kenneth Carpenter建立为新属[1]

词源

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卡拉瓦亚龙的属名是以古生物学家Jack M. Callaway为名,这位古生物学家曾对史前海生爬行动物作出重大的研究[1][2]。种名则是以化石发现地哥伦比亚为名[2]

叙述

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卡拉瓦亚龙的头骨长35公分[3]身长估计可达8米长。卡拉瓦亚龙的鼻孔长,位于上颌骨上方。上颌骨具有3到5颗牙齿[2]。颈部有56节颈椎,与其他薄板龙科相比,相当短[2]

除了正模标本以外,还发现另一个几乎完整的标本,较正模标本粗壮。某些科学家认为这是两性异形的特征[2]

地理分布

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卡拉瓦亚龙的化石发现于哥伦比亚博亚卡省的Villa de Leyva[2]。卡拉瓦亚龙的生存年代为白垩纪早期(阿普第阶),约1亿2500万到1亿1200万年前[4]

参考资料

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  1. ^ 1.0 1.1 Carpenter, K. 1999. "Revision of North American elasmosaurs from the Cretaceous of the Western Interior". Paludicola 2(2):148-173.
  2. ^ 2.0 2.1 2.2 2.3 2.4 2.5 ppne.co.uk entry on Callawayasaurus. [2008-03-06]. (原始内容存档于2011-07-28). 
  3. ^ oceansofkansas.com entry on Callawayasaurus. [2008-03-08]. (原始内容存档于2020-12-20). 
  4. ^ stratigraphy.org entry on Apitan stage. [2008-03-06]. (原始内容存档于2008-02-09). 

外部链接

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卡拉瓦亚龙属
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