Phylum Mollusca Linnaeus, 1758 - molluscs Class Cephalopoda Cuvier, 1795 - cephalopods Subclass Coleoida Bather, 1888 see Subclass Coleoidea Bather, 1888 Order Sepiida Gray, 1849 Suborder Sepiina Gray, 1849 Superfamily Sepioidea Family Belosaepiidae Nyst, 1843 1 Subfamily Belosaepiinae Nyst, 1843