Kingdom Animalia Linnaeus, 1758 - animals
   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
           Family Muricidae Rafinesque, 1815 - drills
             Genus Hexaplex Perry, 1810
             Genus Morula Schumacher, 1817
             Genus Murex Linnaeus, 1758
             Genus Neorapana Cooke, 1918
             Genus Phyllonotus Swainson, 1833 see Subgenus Phyllonotus Swainson, 1833
             Genus Pterynotus Swainson, 1833
             Genus Thais Röding, 1798