Phylum [Vertebrata] (Lamarck, 1801)
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass †Archaeornithes Gadow, 1893 see Superorder Archaeornithes Gadow, 1893
       1 Order †Archaeopterygiformes Fürbringer, 1888