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)
           Superfamily Helicoidea Rafinesque, 1815
             Family Helicidae Rafinesque, 1815
               1 Subfamily Helicinae Rafinesque, 1815
               2 Subfamily Geomitrinae Boettger, 1909
               3 Subfamily Helicigoninae Wenz, 1915 see Subfamily Ariantinae Mörch, 1864
               4 Subfamily Helicodontinae Kobelt, 1904
               5 Subfamily Leptaxinae Boettger, 1909 see Tribe Leptaxini Boettger, 1909