Phylum Chordata Bateson, 1885 - chordates Count: - Subphylum Vertebrata Cuvier, 1812 - vertebrates Count: - Pisces Count: [*] 5c58o469f; †4c41o87f Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Count: - Subclass Holocephali Bonaparte, 1832 Count: [*] 1o3f; †8o4f Order †Petalodontiformes Zangerl, 1981 Count: -