Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Subclass Ornithurae Haeckel, 1866 see Clade Ornithurae Haeckel 1866 [Gauthier 1986] {Chiappe 1991} Order †Liaoningornithiformes Hou, 1996 Family †Liaoningornithidae Hou, 1996 Genus †Liaoningornis Hou, 1996 1 †Liaoningornis longidigitris Hou, 1996