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单词 Oxynoticeras
释义

Oxynoticeras

中文百科

锐棱菊石

锐棱菊石(学名Oxynoticeras)是一属已灭绝的菊石目,生存于侏罗纪早期的欧洲及北美洲。

  • The Elements of Palaeontology by Rhona M. Black
英语百科

Oxynoticeras 锐棱菊石

Oxynoticeras oxynotum from Lower Lias rocks at Bishops Cleeve in Gloucestershire, England, UK.

Oxynoticeras is an extinct genus of ammonite from the Early Jurassic of Europe and North America. This genus is characterized by its smooth shell, with almost invisible undulations on the flank, and a sharp keel.

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