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
         (Achatinid Sigmurethra)
           Suborder Sigmurethra Pilsbry, 1900 see Group Sigmurethra Pilsbry, 1900
             Superfamily Streptaxoidea Gray, 1860 [monotypic]
               Family Streptaxidae Gray, 1860
                 Subfamily Streptaxinae Gray, 1860
                   Genus Tayloria Bourguignat, 1889
                     1 Subgenus Artemonopsis Germain, 1908
                     2 Subgenus Colpanostoma Bourguignat, 1889
                     3 Subgenus Gigantaxis Tomlin, 1930
                     4 Subgenus Macrogonaxis Thiele, 1932
                     5 Subgenus Pseudogonaxis Thiele, 1932