Concise hierarchy
	(Kingdom) Animalia - (Phylum) Chordata - (Class) Reptilia
Current position
	Alternative positions
	
		Historical positions
		
			
				| †Saurischia (Order) Seeley, 1887 | Ref: 
						
							M.J. Benton, 2005: 397, box 8.5. | 
				
					| †Saurischia (Order) Seeley, 1887 | Ref: 
							
								1998 | 
					
						| †Saurischia (Order) Seeley, 1887 | Ref: 
								
									D. Lambert & the Diagram Group, 1991(1997): 109. | 
						
							| †Saurischia (Order) Seeley, 1887 | Ref: 
									
										1995 | 
							
								| †Saurischia (Order) Seeley, 1887 | Ref: 
										
											R.L. Carroll, 1988: 621. | 
								
									| †Saurischia (Order) Seeley, 1887 | Ref: 
											
												A.S. Romer & T.S. Parsons, 1986: App. 1 (p. 623). | 
									
										| †Saurischia (Order) Seeley, 1887 | Ref: 
												
													H.-P. Schultze et al., 1985: 2, 49. | 
										
											| †Saurischia (Order) Seeley, 1887 | Ref: 
													
														T.I. Storer et al., 1979 | 
											
												| †Saurischia (Order) Seeley, 1887 | Ref: 
														
															B. Grzimek et al., 1973 (1971): 595. | 
											
											Number of Subtaxa