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 Achatinoidea Swainson, 1840
               Family Subulinidae Fischer & Crosse, 1877
                 Subfamily Obeliscinae Thiele, 1931, nom. illeg. see Subfamily Stenogyrinae Fischer & Crosse, 1877
                   Genus Obeliscus Beck, 1837
                     1 Subgenus Dolicholestes Pilsbry, 1906
                     2 Subgenus Ischnocion Pilsbry, 1907
                     3 Subgenus Lyobasis Pilsbry, 1903
                     4 Subgenus Protobeliscus Pilsbry, 1906
                     5 Subgenus Pseudobalea Shuttleworth, 1854
                     6 Subgenus Rectobelus Baker, 1927
                     7 Subgenus Stenogyra Shuttleworth, 1854 see Genus Stenogyra Shuttleworth, 1854