Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
         Suborder Neotaenioglossa Haller, 1882 see Order Sorbeoconcha Ponder & Lindberg, 1997
           Superfamily Naticoidea Guilding, 1834
             Family Ampullinidae Cossmann, 1919
               Subfamily Ampullospirinae Cox, 1930 see Family Ampullinidae Cossmann, 1919
                 Genus Amaurellina Bayle, 1885
                   Subgenus Crommium Cossmann, 1888