Class: CEPHALOPODA --- Taxon Tree: AMMONOIDEA [Subclass] - AMMONITIDA [Order] - STEPHANOCERATOIDEA [Superfamily] ------ Family: STEPHANOCERATIDAE Neumayr, 1875 † (Sea) --------- SubFamily: STEPHANOCERATINAE ------------ Genus: Duashnoceras Hillebrandt, 1977 †
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