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 Rumininae Wenz, 1923
                   1 Genus Rumina Risso, 1826
                   2 Genus Namibiella Zilch, 1954
                   3 Genus Obeliscella Jousseaume, 1889
                   4 Genus Xerocerastus Kobelt & Möllendorff, 1902
                   5 Genus Zootecus Westerlund, 1887