Dinornithiformes
Struthioniformes
Aepyornithiformes
Rheiformes
Diatrymiformes
Ciconiiformes
Caprimulgiformes
Casuariiformes
Sphenisciformes
Apterygiformes
Pelecaniformes
Ichthyornithiformes
Anseriformes
Tinamiformes
Pelecaniformes
Podicipitiformes
Hesperornithiformes
Falconiformes
Gruiformes
Coliiformes