Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Subclass Ornithurae Haeckel, 1866 see Clade Ornithurae Haeckel 1866 [Gauthier 1986] {Chiappe 1991} Order †Yanornithiformes Zhou & Zhang, 2001 Family †Yanornithidae Zhou & Zhang, 2001 Genus †Yanornis Zhou & Zhang, 2001 1 †Yanornis martini Zhou & Zhang, 2001