[Bears Armed]

Lithornithiformes: Lithornithidae
Struthioniformes: Struthionithidae
Rheiformes: Rheidae
† Aepornithiformes: Aepornithidae
Casuariformes: Casuaridae
Casuarifomes: Dromaeidae
Tinamiformes: Tinamithidae
Apterygiformes: Apterygidae
† Dinornithiformes: Dinornithidae