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
                 1 Subgenus Hemisepius Steenstrup, 1875
                 2 Subgenus Metasepia Hoyle, 1885 see Genus Metasepia Hoyle, 1885