Concise hierarchy
	(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia - (Order) Protorosauria - (Family) Protorosauridae
Included, by definition, in branch-based clade
Current position
	Historical positions
	
		
			| Pan-Archosauria (Clade) Gauthier 2020 | Ref: 
					
						M.D. Ezcurra et al., 2020: ext. data fig. 4. | 
			
				| †Prolacertiformes (Order) Camp, 1945 | Ref: 
						
							M.J. Benton, 2005: 147, box 5.1.
						 [rough position] | 
				
					| †Protorosauridae (Family) Cope, 1871 | Ref: 
							
								R.L. Carroll, 1988: 619. | 
					
						| †Araeoscelidia (Order) Williston, 1913 | Ref: 
								
									T.I. Storer et al., 1979 | 
						
							| †Protorosauridae (Family) Cope, 1871 | Ref: 
									
										B. Grzimek et al., 1973 (1971): 597. | 
						
						Number of Subtaxa