Vertebrata Cuvier, 1812 - vertebrates Gnathostomata Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes Order †Cladoselachida Dean, 1909 [monotypic] see Order Cladoselachiformes Family †Cladoselachidae Dean, 1894