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加利福尼亚鱼龙属

加利福尼亚鱼龙属
化石时期:228–210 Ma
皮氏加利福尼亚鱼龙
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 爬行纲 Reptilia
目: 鱼龙目 Ichthyosauria
科: 加利福尼亚鱼龙科 Californosauridae
属: 加利福尼亚鱼龙属 Californosaurus
Kuhn, 1934
模式种
皮氏加利福尼亚鱼龙
Californosaurus perrini

Kuhn, 1934

加利福尼亚鱼龙属(属名:Californosaurus)是一种生存在三叠纪诺利阶的鱼龙类,化石发现于加州的下Hosselkus石灰岩层。是目前已知最原始的真鱼龙类。

加利福尼亚鱼龙与人类的体型相比图

与身体其他部分相比,加利福尼亚鱼龙的长口鼻部与头部较小,与混鱼龙杯椎鱼龙等基础鱼龙类相似。牠们的尾巴锐利地往下弯,与更先进的鱼龙类相同,并有垂直的锚尾。加利福尼亚鱼龙拥有小型的背鳍。荐椎前的脊椎骨有45到50个。牠们的掌骨呈圆形,并且平坦分布,使鳍状肢呈现圆形外表。加利福尼亚鱼龙身长为3米。牠们以鱼类及其他小型海洋生物为主食。和其他鱼龙类一样,加利福尼亚鱼龙很可能一生都不会离开水域,所以生产也是在水中进行。

参考资料

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加利福尼亚鱼龙属
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