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 Ariophantidae Godwin-Austen, 1888
               01 Genus Ariophanta Desmoulins, 1829
               02 Genus Colparion Laidlaw, 1938
               03 Genus Cryptozona Mörch, 1872
               04 Genus Euplecta Semper, 1870
               05 Genus Hemiplecta Albers, 1850
               06 Genus Indrella Godwin-Austen, 1901
               07 Genus Kalidos Gude, 1911
               08 Genus Malagarion Tillier, 1979
               09 Genus Naninia Sowerby, 1842, orth. inval. see Genus Nanina Gray, 1834, nom. illeg.
               10 Genus Platymma Tomlin, 1938
               11 Genus Ratnadvipia Godwin-Austen, 1899
               12 Genus Ravana Godwin-Austen, 1901
               13 Genus Rhyssotopsis Ancey, 1887
               14 Subfamily Dyakiinae Gude & Woodward, 1921 see Family Dyakiidae Gude & Woodward, 1921
               15 Subfamily Parmarioninae Godwin-Austen, 1908 see Subfamily Ostracolethinae Simroth, 1901
               16 Subfamily Girasiinae see Tribe Girasiini Collinge, 1902
               17 Subfamily Macrochlamydinae Godwin-Austen, 1888
               18 Subfamily Chroninae Thiele, 1931 [monotypic] see Family Chronidae Thiele, 1931
               19 Subfamily Durgellinae Godwin-Austen, 1888