Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
Count: †15o;15f;23g;26s
   Subclass †Enantiornithes Walker, 1981 see Infraclass Enantiornithes Walker, 1981
  Count: †7o;7f;12g;12s
     Order †Longirostravisiformes Zhou & Zhang, 2006 see Order Longipterygiformes Zhang, Zhou, Hou & Gu, 2001
    Count: [†*] †1f;2g;2s
       Family †Longirostravisidae Zhou & Zhang, 2006 see Clade Longipterygidae Zhang, Zhou, Hou & Gu 2001 [O'Connor et al. 2009]
      Count: [†*] †2g;2s
         ?Genus †Otogornis Hou, 1994
        Count: [†*] †1s
           1 †Otogornis genghisi Hou, 1994
          Count: -