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
               Subfamily Helixarioninae Bourguignat, 1883, orth. inval. see Subfamily Helicarioninae Bourguignat, 1877
                 01 Genus Helixarion Férussac, 1821, orth. rej. see Genus Helicarion Férussac, 1821
                 02 Genus Amphiblema Gude, 1911
                 03 Genus Bathia Robson, 1914
                 04 Genus Caldwellia Adams, 1873
                 05 Genus Epiglypta Pilsbry, 1893
                 06 Genus Inozonites Pfeffer, 1883
                 07 Genus Methvenia Robson, 1914
                 08 Genus Nesaecia Gude, 1911
                 09 Genus Parmacochlea Smith, 1884
                 10 Genus Petalochlamys Godwin-Austen, 1907
                 11 Genus Pseudaustenia Cockerell, 1891
                 12 Genus Westralcystis Vaught, 1989, orth. inval. see Genus Westracystis Iredale, 1939
                 13 Genus Wilhelminaia Preston, 1913