Class: CEPHALOPODA --- Taxon Tree: AMMONOIDEA [Subclass] - AMMONITIDA [Order] - ACANTHOCERATOIDEA [Superfamily] ------ Family: COLLIGNONICERATIDAE Wright & Wright, 1951 † (Sea) --------- SubFamily: MAMMITINAE ------------ Genus: Barroisiceras Moreman, 1927 †
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