Class Cephalopoda Cuvier, 1795 - cephalopods
   Subclass Coleoidea Bather, 1888
     Superorder Vampyropoda Boletzky, 1992 see Superorder Octopodiformes Young et al., 1998
       Order Vampyromorpha Grimpe, 1917 - vampire squids see Order Vampyromorphida Pickford, 1939
         Suborder †Mesoteuthina Naef, 1921
           Family †Trachyteuthididae Naef, 1921
             Subfamily †Actinosepiinae Doyle, Donovan & Nixon, 1994