Phylum Chordata Bateson, 1885 - chordates Count: - Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801 Count: - Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Count: - Order Rajiformes Berg, 1940 - skates Count: -