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原鳄属

原鳄属
化石时期:侏罗纪早期
原鳄重建图
科学分类 编辑
界: 动物界 Animalia
门: 脊索动物门 Chordata
纲: 爬行纲 Reptilia
科: 原鳄科 Protosuchidae
属: 原鳄属 Protosuchus
Brown, 1934
模式种
Protosuchus richardsoni
(Brown, 1933)
  • P. richardsoni
    (Brown, 1933)
  • P. haughtoni
    (Whetstone & Whybrow, 1983)
  • P. micmac Sues et al. 1996
异名
  • Baroqueosuchus
    Busbey & Gow, 1984
  • 莱索托鳄 Lesothosuchus Whetstone & Whybrow, 1983
P. richardsoni的化石(编号AMNH 3024)
编号AMNH 3024标本的头颅骨
编号AMNH 3024标本的骨盆与后肢

原鳄属学名Protosuchus),意思是“第一种鳄类”,是肉食性鳄形超目的一属,生存于侏罗纪早期。原鳄身长为1米,重达40公斤。

身为早期鳄类,牠的头颅特征比较像鳄类,而非牠们的早期祖先;牠拥有短口鼻部,下颌与头颅连结的部分宽广,形成大表面,让下颌肌肉附着在上面。这让嘴部形成极大的张口,嘴部紧闭时极大的力量。这动物的齿列也类似现代鳄鱼,包括嘴部紧闭时,下颌牙齿与上颌牙齿的凹槽咬合[1]。牠们也拥有强壮的尾巴,较晚后代的尾巴演化成在水中的推进装置。

[编辑]

原鳄属有三种被描述、命名:模式种P. richardsoni发现于美国亚利桑那州P. micmac发现于加拿大新斯科细亚P. haughtoni发现于南非南极

参考资料

[编辑]
  1. ^ Palmer, D. (编). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. 1999: 99. ISBN 1-84028-152-9. 
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原鳄属
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