Class Cephalopoda Cuvier, 1795 - cephalopods
   Subclass Coleoidea Bather, 1888
     Superorder Decembrachiata Winckworth, 1932 see Superorder Decapodiformes Young, Vecchione & Donovan, 1998
       Order Sepiida Gray, 1849
         Suborder Sepiina Gray, 1849
           1 Family †Belosaepiidae Nyst, 1843
           2 Family Sepiidae Lamarck, 1809
           3 Family Loliginidae Rafinesque, 1815