Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Subclass †Sauriurae Haeckel, 1866 see Subclass Archaeornithes Gadow, 1893 Order †Archaeopterygiformes Fürbringer, 1888 1 Family †Archaeopterygidae Huxley, 1871