Phylum Chordata Bateson, 1885 - chordates
   Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
       Order Squatiniformes Buen, 1926 - angel sharks
         Family Squatinidae Blainville, 1816 - angel sharks
           Genus Squatina Duméril, 1805