[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
           Subclass Euselachii Hay, 1902 - sharks, rays, and related fossils
             Infraclass Elasmobranchii Bonaparte, 1838
               Superorder Galeomorphi Compagno, 1973
                 Order Carcharhiniformes Compagno, 1973 - ground sharks
                   Family Scyliorhinidae Gill, 1862 - catsharks
                     1 Genus †Megascyliorhinus Cappetta & Ward, 1977
                     2 Genus †Premontreia Cappetta, 1992
                     3 Genus †Pteroscyllium Cappetta, 1980
                     4 Genus †Palaeoscyllium Wagner, 1857