Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates
     Superclass Pisces Linnaeus, 1758 - fishes
       Chondrichthyes Huxley, 1880 - cartilaginous fishes
         Family Rhinobatidae Müller & Henle, 1838 - guitarfishes
           1 Genus Rhynchobatus Müller & Henle, 1837