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 Partuloidea Pilsbry, 1900 [monotypic]
               Family Partulidae Pilsbry, 1900 [monotypic]
                 Genus Partula Férussac, 1821
                   Subgenus Marianella Pilsbry, 1909