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 Helixarionoidea Bourguignat, 1883, orth. inval.
             Family Helixarionidae Bourguignat, 1883, orth. inval. see Family Helicarionidae Bourguignat, 1877
               1 Subfamily Helixarioninae Bourguignat, 1883, orth. inval. see Subfamily Helicarioninae Bourguignat, 1877
               2 Subfamily Sesarinae Thiele, 1931 see Subfamily Helicarioninae Bourguignat, 1877
               3 Subfamily Ereptinae Godwin-Austen, 1908 see Subfamily Helicarioninae Bourguignat, 1877
               4 Subfamily Microcystinae Thiele, 1931