Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
   Pygostylia Chatterjee 1997 [Chiappe 2001]
     [Family] †Confuciusornithidae Hou, Zhou, Gu & Zhang, 1995
       1 Genus †Confuciusornis Hou, Zhou, Gu & Zhang, 1995
       2 Genus †Changchengornis Ji, Chiappe & Ji, 1999