Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct.
       Vertebrata Lamarck, 1801 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
         Myopterygii Janvier, 1978 - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Chondrichthiomorphi see Grade Chondrichthyomorphi
               Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
                 Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes see Infraclass Elasmobranchii Bonaparte, 1838
                   Infraclass Euselachii Hay, 1902 - sharks and rays, and related fossils see Subclass Euselachii Hay, 1902
                     Division Neoselachii Compagno, 1977 see Infraclass Elasmobranchii Bonaparte, 1838
                       Subdivision Selachii - sharks see Division Selachii
                         Superorder Galeomorphi Compagno, 1973
                           Order Carcharhiniformes Compagno, 1973 - ground sharks
                             1 Family Scyliorhinidae Gill, 1862 - catsharks
                             2 Family Proscylliidae Fowler, 1941 - finback catsharks
                             3 Family Pseudotriakidae Gill, 1893 - false catsharks
                             4 Family Leptochariidae Gray, 1851 [monotypic] - barbeled houndsharks
                             5 Family Triakidae Gray, 1851 - houndsharks
                             6 Family Hemigaleidae Hasse, 1878 - weasel sharks
                             7 Family Carcharhinidae Jordan & Evermann, 1896 - requiem sharks
                             8 Family Sphyrnidae Bonaparte, 1840 - hammerhead sharks