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 Muricidae Rafinesque, 1815 - drills
               Subfamily Echphorinae Millard, 1997, orth. inval. see Subfamily Ecphorinae Petuch, 1988
                 1 Genus Ecphora Conrad, 1843
                 2 Genus Ecphorosycon Petuch, 1988
                 3 Genus Siphoecphora Petuch, 1989
                 4 Genus Tapanecphora Millard, 1997, orth. inval. see Genus Rapanecphora Petuch, 1989
                 5 Genus Chesathais Petuch, 1988