Concise hierarchy
	(Kingdom) Animalia - (Phylum) Chordata - (Class) Mammalia - (Order) Perissodactyla
Subsequent positions
Original entries
Current position
	Alternative positions
	
					Historical positions
					
						
							| Ceratomorpha (Suborder) Wood, 1937 | 
								Ref: 
									
										C.J. Burgin et al., 2020: table 2 (p. 27).
									 | 
							
							
								| Perissodactyla (Order) Owen, 1848 | 
									Ref: 
										
											D.E. Wilson & D.M. Reeder, 2011: 59.
										 | 
								
								
									| Perissodactyla (Order) Owen, 1848 | 
										Ref: 
											
												P. Grubb, 2005: 634.
											 | 
									
									
										| Rhinocerotoidea (Superfamily) Gray, 1825 | 
											Ref: 
												
													M.C. McKenna & S.K. Bell, 1997: 480.
												 | 
										
										
											| Perissodactyla (Order) Owen, 1848 | 
												Ref: 
													
														1995
													 | 
											
											
												| Perissodactyla (Order) Owen, 1848 | 
													Ref: 
														
															P. Grubb, 1993: 371; 6.
														 | 
												
												
													| Perissodactyla (Order) Owen, 1848 | 
														Ref: 
															
																G.B. Corbet & J.E. Hill, 1991: 124.
															 | 
													
													
														| Rhinocerotoidea (Superfamily) Gray, 1825 | 
															Ref: 
																
																	R.L. Carroll, 1988: 645.
																 | 
														
														
															| Perissodactyla (Order) Owen, 1848 | 
																Ref: 
																	
																		A.F. DeBlase, 1982: 1057-1058.
																	 | 
															
															
																| Perissodactyla (Order) Owen, 1848 | 
																	Ref: 
																		
																			T.I. Storer et al., 1979
																		 | 
																
																
																	| Rhinocerotidea (Superfamily) | 
																		Ref: 
																			
																				B. Grzimek, 1973-1975
																			 | 
																	
																	
																		| Ceratomorpha (Suborder) Wood, 1937 | 
																			Ref: 
																				
																					G.G. Simpson, 1945
																				 | 
																		
																	
																	Number of Subtaxa