Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Subclass †Enantiornithes Walker, 1981 see Infraclass Enantiornithes Walker, 1981 Order †Liaoxiornithiformes Family †Liaoxiornithidae Genus †Liaoxiornis Hou & Chen, 1999, nom. dub. †Liaoxiornis delicatus Hou & Chen, 1999, nom. dub.