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 Batoidea - rays
                         Order Rajiformes Berg, 1940 - skates
                           Family Rajidae Blainville, 1816 - hardnose skates
                             Subfamily Rajinae see Family Rajidae Blainville, 1816
                               01 Genus Amblyraja Malm, 1877
                               02 Genus Anacanthobatis von Bonde & Swart, 1923
                               03 Genus Breviraja Bigelow & Schroeder, 1948
                               04 Genus Cruriraja Bigelow & Schroeder, 1948
                               05 Genus Dactylobatus Bean & Weed, 1909
                               06 Genus Dipturus Rafinesque, 1810
                               07 Genus Fenestraja McEachran & Compagno, 1982
                               08 Genus Gurgesiella de Buen, 1959
                               09 Genus Leucoraja Malm, 1877
                               10 Genus Malacoraja Stehmann, 1970
                               11 Genus Neoraja McEachran & Compagno, 1982
                               12 Genus Okamejei Ishiyama, 1958
                               13 Genus Raja Linnaeus, 1758 - skates
                               14 Genus Rajella Stehmann, 1970
                               15 Genus Rostroraja Hulley, 1972 [monotypic]