Class Cephalopoda Cuvier, 1795 - cephalopods
Count: 6o;6f;1g; †6o;40f;4g
   Subclass Coleoidea Bather, 1888
  Count: [o†o] 6o;6f;1g; †6o;40f;4g
     Superorder Vampyropoda Boletzky, 1992 see Superorder Octopodiformes Young et al., 1998
    Count: [o] 3o;3f;1g; †10f;2g
       Order Vampyromorpha Grimpe, 1917 - vampire squids see Order Vampyromorphida Pickford, 1939
      Count: [f†f] 1f;1g; †9f;1g
         Suborder †Prototeuthina Naef, 1921
        Count: [†f] †6f;1g
           1 Family †Loligosepiidae Van Regteren Altena, 1949
          Count: -
           2 Family †Plesioteuthididae Naef, 1921
          Count: †1g
           3 Family †Geopeltididae Van Regteren Altena, 1949
          Count: -
           4 Family †Leptotheuthididae Naef, 1921
          Count: -
           5 Family †Lioteuthididae Naef, 1922
          Count: -
           6 Family †Mastigophoridae Engeser & Reitner, 1985
          Count: -