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 Hygromiidae Tryon, 1866
               Subfamily Hygromiinae Tryon, 1866
                 Genus Euomphalia Westerlund, 1889
                   1 Subgenus Harmozica Lindholm, 1927
                   2 Subgenus Hesseola Lindholm, 1927 see Genus Hesseola Lindholm, 1927
                   3 Subgenus Oscarboettgeria Lindholm, 1927