Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801 Gnathostomata Class Chondrichthyes Huxley, 1880 - cartilaginous fishes Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes see Infraclass Elasmobranchii Bonaparte, 1838 Order †Eugeneodontida see Order Eugeneodontiformes Zangerl, 1981 Superfamily †Edestoidea Jaekel, 1899 see Suborder Edestoidei Family †Edestidae Leidy, 1857