Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
   Opisthokonta Cavalier-Smith, 1987 - opisthokonts see Clade Opisthokonta Cavalier-Smith 1987, nom. cl. inval.
     Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
       Eumetazoa Bütschli, 1910 - eumetazoans
         Triploblastica see [unranked] Bilateria Hatschek, 1888
           Bilateria Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
             Protostomia Grobben, 1908 see Infrakingdom Protostomia Grobben, 1908
               Lophotrochozoa Halanych, Bacheller, Aguinaldo, Liva, Hillis & Lake 1995 - lophotrochozoans
                 Spiralia Schleip, 1929 - spiralians see Superphylum Spiralia Schleip, 1929
                   Trochozoa Beklemischev, 1944 - trochozoans
                     Phylum Mollusca Linnaeus, 1758 - molluscs
                       Eumollusca
                         Conchifera Gegenbaur, 1878 see Subphylum Conchifera Gegenbauer, 1878
                           Ganglioneura Rudophi, 1812
                             Rhacopoda see [unranked] Conchifera Gegenbaur, 1878
                               Class Gastropoda Cuvier, 1795 - snails and slugs
                                 prosobranchs see Class Gastropoda Cuvier, 1795
                                   Order Caenogastropoda Cox, 1960 see Superorder Caenogastropoda Cox, 1960
                                     Suborder Neogastropoda Wenz, 1938 see Infraorder Neogastropoda Wenz, 1938
                                       Superfamily Muricoidea Rafinesque, 1815
                                         Family Muricidae Rafinesque, 1815 - drills
                                           Genus Nucella Röding, 1798