Concise hierarchy
	(Kingdom) Animalia - (Phylum) Chordata - (Class) Aves
Original position
Subsequent entries
	
		| Aepyornithiformes (Order) Newton, 1884 |  | Ref: P. Brodkorb, 1963: 205. [assumed] | 
	
		| Apterygiformes (Order) Haeckel, 1866 |  | Ref: P. Brodkorb, 1963: 219. [assumed] | 
	
		| Casuariiformes (Order) Sclater, 1880 |  | Ref: P. Brodkorb, 1963: 202. [assumed] | 
	
		| Dinornithiformes (Order) Gadow, 1893 |  | Ref: P. Brodkorb, 1963: 208. [assumed] | 
	
		| Rheiformes (Order) Forbes, 1884 |  | Ref: P. Brodkorb, 1963: 200. [assumed] | 
	
		| Struthioniformes (Order) Latham, 1790 |  | Ref: P. Brodkorb, 1963: 196. [assumed] | 
Current position
	Historical positions
	
		Number of Subtaxa