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始巨鳄属

始巨鳄属
化石时期:二叠纪晚期,267 Ma
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 合弓纲 Synapsida
演化支 兽孔类 Therapsida
科: 始巨鳄科 Eotitanosuchidae
属: 始巨鳄属 Eotitanosuchus
Tchudinov, 1960
模式种
始巨鳄
Eotitanosuchus olsoni

Tchudinov, 1960
异名
  • 伊凡龙 Ivantosaurus
    Benton, Shishkin, Unwin, 2003

始巨鳄属学名Eotitanosuchus),即伊凡龙属Ivantosaurus),是种似哺乳爬行动物,化石发现于俄罗斯彼尔姆地区,跟巴莫鳄冠鳄兽一起在河相沉积层中发现。牠们生存在2亿6700万年前,是种大型的动物;虽然头骨通常是35公分长,这些属于幼年体的,成年的头骨被估计有1米长。

如同巴莫鳄,始巨鳄是种掠食动物,但牠们很原始,眼眶后的颞颥孔很小,让牠们的咬合力很小。然而在巴莫鳄类中,始巨鳄的颞颥孔仍然是最大的。

参考书目

[编辑]
  • Chudinov, P. K. 1965, "New Facts about the Fauna of the Upper Permian of the USSR", Journal of Geology, 73:117-30
  • Olsen, E. C., 1962, Late Permian terrestrial vertebrates, USA and USSR Transactions of the American Philosophical Society, new series, 52: 1–224.
  • Patricia Vickers-Rich and Thomas H. Rich, The Great Russian Dinosaurs, Gunter Graphics, 1993, Pg 28.

外部链接

[编辑]


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始巨鳄属
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