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
                             Family Scyliorhinidae Gill, 1862 - catsharks
                               01 Genus Apristurus Garman, 1913
                               02 Genus Asymbolus Whitley, 1939
                               03 Genus Atelomycterus Garman, 1913
                               04 Genus Aulohalaelurus Fowler, 1934
                               05 Genus Bythaelurus Compagno, 1988
                               06 Genus Cephaloscyllium Gill, 1862
                               07 Genus Cephalurus Bigelow & Schroeder, 1941 [monotypic]
                               08 Genus Galeus Rafinesque, 1810
                               09 Genus Halaelurus Gill, 1862
                               10 Genus Haploblepharus Garman, 1913 - shysharks
                               11 Genus Holohalaelurus Fowler, 1934
                               12 Genus Parmaturus Garman, 1906
                               13 Genus Pentanchus Smith & Radcliffe, 1912 [monotypic]
                               14 Genus Poroderma Smith, 1838 - barbelled catsharks
                               15 Genus Schroederichthys Springer, 1966
                               16 Genus Scyliorhinus Blainville, 1816