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 Sepiidae Lamarck, 1809 Genus Sepia Linnaeus, 1758 Subgenus Hemisepius Steenstrup, 1875