Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct. see Subphylum Vertebrata Cuvier, 1812
       Vertebrata (Lamarck, 1801) - vertebrates see Subphylum Vertebrata Cuvier, 1812
         Myopterygii - myopterygians
           Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
             Grade Chondrichthiomorphi
               Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
                 Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes
                   Infraclass Euselachii Hay, 1902 - sharks and rays, and related fossils
                     Division Neoselachii Compagno, 1977
                       Subdivision Selachii - sharks
                         Superorder Galeomorphi (Compagno, 1973)
                           Order Carcharhiniformes Compagno, 1973 - ground sharks
                             1 Family Scyliorhinidae Gill, 1862 - cat sharks
                             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, 1879 - weasel sharks
                             7 Family Carcharhinidae Jordan & Evermann, 1896 - requiem sharks
                             8 Family Sphyrnidae Gill, 1872 - hammerhead sharks