Apsaravis
Ichthyornis
Hesperornis
Tinamidae
Apterygidae
Rheidae
Galliformes
Anatidae
Anhimidae
Sanshuiornis_zhangi
Psophiidae
Rallidae
Burhinidae
Recurvirostridae
Procellariidae
Spheniscidae
Gaviidae
Podicipedidae
Columbidae
Pteroclidae
Cathartidae
Sagittariidae
Strigiformes
Falconidae
Accipitridae
Phaethontidae
Threskiornithidae
Ciconiidae
Phoenicopteridae
Otididae
Opisthocomidae
Cariamidae
Musophagidae
Cuculidae
Ardeidae
Eurypygidae
Balaenicipitidae
Phalacrocoracidae
Fregatidae