(Apsaravis,(Ichthyornis,(Hesperornis,((Tinamidae,(Rheidae,Apterygidae)),((Galliformes,(Anhimidae,Anatidae)),(Opisthocomidae,Phoenicopteridae,Threskiornithidae,Cariamidae,Cuculidae,Musophagidae,Spheniscidae,Phaethontidae,Fregatidae,Phalacrocoracidae,Balaenicipitidae,Eurypygidae,Ardeidae,Ciconiidae,Procellariidae,Otididae,Pteroclidae,Columbidae,Rallidae,Psophiidae,Gruidae,Steatornithidae,Psittaciformes,Coliidae,Trogonidae,Aegothelidae,Coraciidae,Passeriformes,IGM_100_slash_1447,Eogrus_aeola,Eogrus_wetmorei,(Podicipedidae,Gaviidae),(Cathartidae,(Sagittariidae,(Strigiformes,(Accipitridae,Falconidae)))),(Recurvirostridae,Burhinidae)))))));