Concise hierarchy
	(Kingdom) Animalia - (Phylum) Chordata
Phylogeny
	Original position
	
	Subsequent positions
	
	Original entries
	
		
			| Accipitres (Order) Linnaeus, 1758 |  |  | 
		
			| Anseres (Order) Linnaeus, 1758 |  |  | 
		
			| Gallinae (Order) Linnaeus, 1758 |  |  | 
		
			| Grallae (Order) Linnaeus, 1758 |  |  | 
		
			| †Jeholornithiformes (Order) Zhou & Zhang, 2006 |  | Ref: Z. Zhou & F. Zhang, 2006: 78. | 
		
			| Passeres (Order) Linnaeus, 1758 |  |  | 
		
			| Picae (Order) Linnaeus, 1758 |  |  | 
		
			| †Sapeornithiformes (Order) Zhou & Zhang, 2006 |  | Ref: Z. Zhou & F. Zhang, 2006: 78. | 
	
	Current position
	
		Alternative positions
		
			
				| Gnathostomata (Superclass) Gegenbaur, 1874 | Ref: 
						
							R.C. van Caenegem et al., 1980: 307. | 
				
					| Homotherma (Superclass) | Ref: 
							
								L.B. Halstead, 1974: 172. | 
					
						| †Maniraptora (Infradivision) Gauthier, 1986 | Ref: 
								
									M.J. Benton, 2005: 397. | 
						
							| Monocondyla (Branch) | Ref: 
									
										E.R. Lankester, 1877: 450. | 
							
								| Ornithomorpha ([unranked]) Seeley, 1891 | Ref: 
										Seeley, 1891
									 [inferred name] | 
							
								| Regnum Animale (Kingdom) C. Linnaeus, 1758 | Ref: 
										
											[von] Linné, C., 1766: 109. | 
								
									| Tetrapoda (Superclass) Goodrich, 1930 | Ref: 
											
												L. Margulis & K.V. Schwartz, 1982: 239. | 
									
										| Vertebrata (Subphylum) Cuvier, 1812 | Ref: 
												
													A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 623). | 
									
									Historical positions
									
										
											| Chordata (Phylum) Bateson, 1885 | Ref: 
													
														T. Rees et al., 2020: table 2 (p. 131). | 
											
												| †Maniraptora (Infradivision) Gauthier, 1986 | Ref: 
														
															M.J. Benton, 2005: 397, 398, boxes 8.5, 9.2. | 
												
													| Chordata ([unranked]) Bateson, 1885 | Ref: 
															
																J.J. Sepkoski Jr., 2002: 320. | 
													
														| Vertebrata (Subphylum) Cuvier, 1812 | Ref: 
																
																	2000 | 
														
															| Vertebrata (Subphylum) Cuvier, 1812 | Ref: 
																	
																		1998 | 
															
																| Vertebrata (Subphylum) Cuvier, 1812 | Ref: 
																		
																			1995 | 
																
																	| Chordata (Phylum) Bateson, 1885 | Ref: 
																			
																				C.M. Perrins, 1991 (1990): 19. | 
																	
																		| Vertebrata (Subphylum) Cuvier, 1812 | Ref: 
																				
																					R.C. Brusca & G.J. Brusca, 1990 | 
																		
																			| Amniota (Clade) Haeckel, 1866 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. | Ref: 
																					
																						R.L. Carroll, 1988: 624, fig. 1.3. | 
																			
																				| Sauropsida ([unranked]) Huxley, 1864 | Ref: 
																						
																							R.L. Carroll, 1988: fig. 1.3.
																						 [alternative position] | 
																				
																					| Vertebrata (Subphylum) Cuvier, 1812 | Ref: 
																							
																								A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 623). | 
																					
																						| Gnathostomata (Superclass) Gegenbaur, 1874 | Ref: 
																								
																									R.C. van Caenegem et al., 1980: 307. | 
																						
																							| Vertebrata (Subphylum) Cuvier, 1812 | Ref: 
																									
																										W.J. Bock, 1982: 967. | 
																							
																								| Tetrapoda (Superclass) Goodrich, 1930 | Ref: 
																										
																											L. Margulis & K.V. Schwartz, 1982: 239. | 
																								
																									| Tetrapoda (Superclass) Goodrich, 1930 | Ref: 
																											
																												T.I. Storer et al., 1979: 327, [744]-774. | 
																									
																										| Vertebrata (Subphylum) Cuvier, 1812 | Ref: 
																												
																													B. Grzimek et al., 1973 (1968): 569. | 
																										
																											| Homotherma (Superclass) | Ref: 
																													
																														L.B. Halstead, 1974: 172. | 
																											
																												| Monocondyla (Branch) | Ref: 
																														
																															E.R. Lankester, 1877: 450, 453. | 
																												
																													| Animalia (Kingdom) Linnaeus, 1758 | Ref: 
																															
																																C. Illiger, 1811: [194]. | 
																													
																														| Regnum Animale (Kingdom) C. Linnaeus, 1758 | Ref: 
																																
																																	C. a Linné, 1766: 19, 109-120. | 
																														
																															| Regnum Animale (Kingdom) C. Linnaeus, 1758 | Ref: 
																																	
																																		C. Linnaeus, 1758: 12, 78-85. | 
																														
																														Number of Subtaxa