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 Strophocheiloidea Pilsbry, 1902 see Superfamily Acavoidea Pilsbry, 1895
               1 Family Strophocheilidae Pilsbry, 1902
               2 Family Megalobulimidae Leme, 1973 [monotypic] see Subfamily Megalobuliminae Leme, 1973
               3 Family Dorcasiidae Connolly, 1915