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 Tripterotyphinae D'Attilio & Hertz, 1988
                 1 Genus Ponderia Houart, 1986
                 2 Genus Prototyphis Ponder, 1972
                 3 Genus Pterotyphis Jousseaume, 1881
                 4 Genus Tripterotyphis Pilsbry & Lowe, 1932