[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
           Subclass Euselachii Hay, 1902 - sharks, rays, and related fossils
             Infraclass Elasmobranchii Bonaparte, 1838
               Superorder Galeomorphi Compagno, 1973
                 Order Carcharhiniformes Compagno, 1973 - ground sharks
                   1 Family Scyliorhinidae Gill, 1862 - catsharks
                   2 Family Pentanchidae Smith, 1912 - deepwater catsharks
                   3 Family Proscylliidae Fowler, 1941 - finback catsharks
                   4 Family Pseudotriakidae Gill, 1893 - false catsharks
                   5 Family Leptochariidae Gray, 1851 - barbeled houndsharks
                   6 Family Triakidae Gray, 1851 - houndsharks
                   7 Family Hemigaleidae Hasse, 1878 - weasel sharks
                   8 Family Carcharhinidae Jordan & Evermann, 1896 - requiem sharks
                   9 Family Sphyrnidae Bonaparte, 1840 - hammerhead sharks