Cleoniceras Ammonite, from Madagascar (No.27)

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Cleoniceras Ammonite, from Madagascar (No.27)Cleoniceras Ammonite, from Madagascar
Lower Jurassic, Albian Stage, 100.5 - 113 Million Years

Measurements Approx.
Height - 16 cm
Width - 3.7 cm
Length - 12.4 cm

 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.