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 Squalomorphi
                           Order Squaliformes Compagno, 1973 - dogfish sharks
                             1 Family Squalidae Blainville, 1816 - dogfish sharks
                             2 Family Centrophoridae Bleeker, 1859 - gulper sharks
                             3 Family Etmopteridae Fowler, 1934 - lantern sharks
                             4 Family Somniosidae Jordan, 1888 - sleeper sharks
                             5 Family Oxynotidae Gill, 1872 [monotypic] - rough sharks
                             6 Family Dalatiidae Gray, 1851 - kitefin sharks