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鹦鹉螺目

鹦鹉螺目
化石时期:泥盆纪至现代
珍珠鹦鹉螺(Nautilus pompilius
科学分类 编辑
界: 动物界 Animalia
门: 软体动物门 Mollusca
纲: 头足纲 Cephalopoda
亚纲: 鹦鹉螺亚纲 Nautiloidea
目: 鹦鹉螺目 Nautilida
Agassiz,1847
总科
  • †艾皮角石总科 Aipocerataceae
  • †克莱底鹦鹉螺总科 Clydonautilaceae
  • †头戴角石总科 Tainocerataceae
  • †三角角石总科 Trigonocerataceae
  • 鹦鹉螺总科 Nautilaceae

鹦鹉螺目学名Nautilida)是鹦鹉螺亚纲下唯一存有现生种。鹦鹉螺目始出现于泥盆纪,一般认为是由箭钩角石目英语Oncocerida演化而来。在其后几亿年的漫长时间中,牠们发展出了22~34个、165~184个属,但其中绝大部分都已经灭绝,仅剩鹦鹉螺科下的鹦鹉螺属异鹦鹉螺属两支延续至今,故被古生物学界称为“活化石”。

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鹦鹉螺目
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