Phylum Mollusca Linnaeus, 1758 - molluscs
   Subphylum Conchifera Gegenbauer, 1878
     Class Gastropoda Cuvier, 1795 - snails and slugs
       Subclass Orthogastropoda Ponder & Lindberg, 1995
         Superorder Cocculiniformia Haszprunar, 1987 see Superfamily Cocculinoidea Dall, 1882
           Superfamily Lepetelloidea Dall, 1882
             1 Family Addisoniidae Dall, 1882
             2 Family Bathyphytophilidae Moskalev, 1978
             3 Family Choristellidae Ph. Bouchet & A. Warén, 1979 see Subfamily Choristellinae Bouchet & Warén, 1979
             4 Family Cocculinellidae Moskalev, 1971
             5 Family Lepetellidae Dall, 1882
             6 Family Osteopeltidae Marshall, 1987
             7 Family Pseudococculinidae Hickman, 1983
             8 Family Pyropeltidae McLean & Haszprunar, 1987