Paradeshayesites is an extinct genus of cephalopod belonging to the ammoniteThe Origin and evolution of the family Deshayesitidae Stoyanow, 1949 subclass.
Biostratigraphic significance The International Commission on Stratigraphy (ICS) has assigned the First Appearance Datum of Paradeshayesites oglanlensis as the defining biological marker for the start of the Aptian Stage of the Cretaceous, ~125.0 million years ago.
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