Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
   Phylum Chordata Bateson, 1885 - chordates
     Subphylum Craniata auct.
       Infraphylum Vertebrata Lamarck, 1801 - vertebrates
         Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
           Eugnathostomata
             Grade Chondrichthyomorphi [monotypic]
               Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
                 Subclass Euselachii Hay, 1902 - sharks, rays, and related fossils
                   Infraclass Elasmobranchii Bonaparte, 1838
                     Division Batomorphi - rays
                       Order Pristiformes - guitarfishes and sawfishes see Order Rhinopristiformes Naylor, Caira, Jensen, Rosana, Straube & Lakner, 2012
                         1 Family †Sclerorhynchidae Capetta, 1974, "nom. praeval."
                         2 Family †Ptychotrygonidae Kriwet, Nunn & Klug, 2009
                         3 Family "Rhinobatidae" Bonaparte, 1835 - guitarfishes
                         4 Family Rhinidae Müller & Henle, 1841 - bowmouth guitarfishes
                         5 Family Rhynchobatidae Bleeker, 1865 - wedgefishes see Subfamily Rhynchobatinae
                         6 Family Pristidae Bonaparte, 1835 - sawfishes