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
         Superfamily Rissooidea Gray, 1847
           Family Elachisinidae Ponder, 1985
             1 Genus Elachisina Dall, 1918
             2 Genus Cirsope Cossmann, 1888
             3 Genus Entomope Cossmann, 1888
             4 Genus Lacunella Deshayes, 1861
             5 Genus Laeviphitus van Aartsen, Bogi & Giusti, 1989
             6 Genus Pseudocirsope Boettger, 1907