living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
               Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes
                 Cohort Euselachii Hay, 1902 - spined sharks and relatives see Infraclass Euselachii Hay, 1902
                   Subcohort Neoselachii Compagno, 1977 - modern sharks and rays see Cohort Neoselachii Compagno, 1977
                     Superorder Galeomorphii Compagno, 1973 see Division Galeomorphii Compagno, 1973
                       Order Carcharhiniformes Compagno, 1973 - ground sharks
                         Family Scyliorhinidae Gill, 1862 - cat sharks
                           01 Genus Apristurus Garman, 1913
                           02 Genus Atelomycterus Garman, 1913
                           03 Genus Aulohalaelurus Fowler, 1934
                           04 Genus Cephaloscyllium Gill, 1861
                           05 Genus Cephalurus Bigelow & Schroeder, 1941
                           06 Genus Galeus Rafinesque, 1810
                           07 Genus Halaelurus Gill, 1862
                           08 Genus Haploblepharus Garman, 1913 - shysharks
                           09 Genus Holohalaelurus Fowler, 1934
                           10 Genus Parmaturus Garman, 1906
                           11 Genus Pentanchus Smith & Radcliffe, 1912
                           12 Genus Poroderma Smith, 1838 - barbelled catsharks
                           13 Genus Schroederichthys Springer, 1966
                           14 Genus Scyliorhinus Blainville, 1816