Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs see Class Gastropoda Cuvier, 1795
       Order Neogastropoda Wenz, 1938 see Suborder Neogastropoda Wenz, 1938
         Suborder Stenoglossa Bouvier, 1887
           Superfamily Muricoidea Rafinesque, 1815
             Family Cystiscidae Stimpson, 1865
               1 Subfamily Plesiocystiscinae Coovert & Coovert, 1995 [monotypic]
               2 Subfamily Cystiscinae Stimpson, 1865
               3 Subfamily Persiculinae Coovert & Coovert, 1995
               4 Subfamily Granulininae Coovert & Coovert, 1995