Class: CEPHALOPODA --- Taxon Tree: AMMONOIDEA [Subclass] - AMMONITIDA [Order] - PERISPHINCTOIDEA [Superfamily] ------ Family: AULACOSTEPHANIDAE Spath, 1924 † (Sea) --------- SubFamily: AULACOSTEPHANINAE ------------ Genus: Zonovia (Xenostephanoides) Arkell & Callomon, 1963 †
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