Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Divasibranchia Minichev & Starobogatov, 1975
       Order Stylommatophora Schmidt, 1855 see Infraorder Stylommatophora Schmidt, 1855
         (Helicid Sigmurethra)
           01 Superfamily Sagdoidea Pilsbry, 1895 [monotypic]
           02 Superfamily Gastrodontoidea Tryon, 1866 [monotypic]
           03 Superfamily Helixarionoidea Bourguignat, 1883, orth. inval.
           04 Superfamily Vitrinoidea Fitzinger, 1833 see Superfamily Limacoidea Batsch, 1789
           05 Superfamily Limacoidea Batsch, 1789
           06 Superfamily Trigonochlamydoidea Hesse, 1882 [monotypic] see Superfamily Parmacelloidea Fischer, 1856 (1855)
           07 Superfamily Polygyroidea Pilsbry, 1895 see Superfamily Helicoidea Rafinesque, 1815
           08 Superfamily Camenoidea Millard, 1996, orth. inval. see Superfamily Camaenoidea Pilsbry, 1895
           09 Superfamily Helicoidea Rafinesque, 1815
           10 Superfamily Divers
           11 Superfamily Arionoidea Gray, 1840