Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Superclass Pisces Linnaeus, 1758 - fishes
               Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
                 Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes
                   Order Selachii see Subdivision Selachii
                     Order Selachii see Subdivision Selachii
                       1 Suborder Notidanoidei see Order Hexanchiformes Compagno, 1973
                       2 Suborder Chlamydoselachoidei see Order Hexanchiformes Compagno, 1973
                       3 Suborder Heterodontoidei see Order Heterodontiformes Compagno, 1973
                       4 Suborder Galeoidei
                       5 Suborder Squaloidei Müller & Henle, 1838 see Order Squaliformes Compagno, 1973
                       6 Suborder Pristiophoroidei
                       7 Suborder Squatinoidei Berg, 1940 see Order Squatiniformes Buen, 1926