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 Trivioidea F.H. Troschel, 1863 see Superfamily Velutinoidea Gray, 1840
             Family Eratoidae T. Gill, 1871 - coffee bean shells see Tribe Eratoini Gill, 1871
               Subfamily Eratoinae Gill, 1871
                 Tribe Eratoini Gill, 1871
                   Genus †Proterato Schilder, 1927
                     1 Subgenus Cypraeerato Schilder, 1932
                     2 Subgenus Eratoena Iredale, 1935
                     3 Subgenus Sulcerato Finlay, 1930