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
         1 Genus †Yanornis Zhou & Zhang, 2001