Concise hierarchy
	(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia - (Order) Anseriformes - (Family) Anatidae
Original position
Subsequent positions
Current position
	Alternative positions
	
					Historical positions
					
						
							| Anatinae (Subfamily) Vigors, 1825 | Ref: 
									
										E.C. Dickinson, 2003: 70. | 
							
								| Anatini (Tribe) Vigors, 1825 | Ref: 
										
											B.L. Monroe Jr. & C.G. Sibley, 1993: 19. | 
								
									| Anatinae (Subfamily) Vigors, 1825 | Ref: 
											
												C.M. Perrins, 1991 (1990): 369. | 
									
										| Anatidae (Family) Vigors, 1825 | Ref: 
												
													W.J. Bock, 1982: 976.
												 [rough position] | 
										
											| Mergini (Tribe) | Ref: 
													
														B. Grzimek et al., 1973 (1968): 581. | 
											
												| Anseres (Order) Linnaeus, 1758 | Ref: 
														
															C. a Linné, 1766: 118, 207. | 
												
													| Anseres (Order) Linnaeus, 1758 | Ref: 
															
																C. Linnaeus, 1758: 84, 129. | 
												
												Number of Subtaxa