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 Acavoidea Pilsbry, 1895
               Family Acavidae Pilsbry, 1895
                 Subfamily Acavinae Pilsbry, 1895 see Family Acavidae Pilsbry, 1895
                   1 Genus Acavus Montfort, 1810
                   2 Genus Ampelita Beck, 1837
                   3 Genus Eurystyla Ancey, 1887
                   4 Genus Helicophanta Férussac, 1821
                   5 Genus Leucotaenius Martens, 1860
                   6 Genus Oligospira Ancey, 1887
                   7 Genus Stylodon Beck, 1837