Concise hierarchy
	(Kingdom) Animalia - (Phylum) Chordata - (Class) Amphibia
Current position
	Historical positions
	
		
			| Amphibia (Class) Linnaeus, 1758 | 
				Ref: 
					
						1998
					 | 
			
			
				| Amphibia (Class) Linnaeus, 1758 | 
					Ref: 
						
							1995
						 | 
				
				
					| Amphibia (Class) Gray, 1825 | 
						Ref: 
							
								R.L. Carroll, 1988: 612.
							 | 
					
					
						| Amphibia (Class) Linnaeus, 1758 | 
							Ref: 
								
									A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 622).
								 | 
						
						
							| Amphibia (Class) Linnaeus, 1758 | 
								Ref: 
									
										H.-P. Schultze et al., 1985: [1], 5.
									 | 
							
							
								| Amphibia (Class) Gray, 1825 | 
									Ref: 
										
											T.I. Storer et al., 1979
										 | 
								
								
									| Amphibia (Class) Linnaeus, 1758 | 
										Ref: 
											
												B. Grzimek et al., 1975 (1970): 573.
											 | 
									
									
										| Amphibia (Class) Gray, 1825 | 
											Ref: 
												
													O. Kuhn, 1972: 68.
												 | 
										
									
									Number of Subtaxa