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Cleoniceras Ammonite Halves, from Madagascar (No.631)
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Cleoniceras Ammonite Halves, from Madagascar (No.631)Cleoniceras Ammonite Halves, from Madagascar
110 Million Years Old, Cretaceous Period


Measurements Approx.
Height - 10.7 cm
Width - 1.7 cm
Length - 8.5 cm



Cleoniceras is a rather involute, high-whorled hoplitid from the Lower to basal Middle Albian of Europe, Madagascar, and Transcaspian region. The shell has a generally small umbilicus, arched to acute venter, and typically at some growth stage, falcoid ribs that spring in pairs from umbilical tubercles, usually disappearing on the outer whorls.

  

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