Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates
     Pisces
       Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
         Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes
           Order Rajiformes Berg, 1940 - skates
             Family Anacanthobatidae von Bonde & Swart, 1923 - smooth skates
             Family †Hypsobatidae
             Family Platyrhinidae Jordan, 1923
             Family Rajidae Blainville, 1816 - skates
             Family Rhinobatidae Müller & Henle, 1838 - guitarfishes