Haploceras

Haploceras is a late Upper Jurassic (Kimmeridgian and Tithonian) ammonoid cephalopod and type for the Haploceratidae, similar to Lissoceras but with a broader whorl section and small blunt lappets and a blunt rostrum; some species with feeble ventral folds on body chamber. Haploceras has been found world wide, in North America, Africa, Europe and ...
Found on http://en.wikipedia.org/wiki/Haploceras
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