Concise hierarchy
	(Kingdom) Plantae - (Phylum) Tracheophyta - (Class) Spermatopsida - (Order) Cycadales - (Family) Cycadaceae
Original position
Current position
	Alternative positions
	
		Historical positions
		
			
				| Cycadaceae (Family) Pers. (1807), nom. cons. | 
					Ref: 
						
							A. Novikoff & B. Barabasz-Krasny, 2015: 58.
						 | 
				
				
					| Cycadaceae (Family) Pers. (1807), nom. cons. | 
						Ref: 
							
								M.J.M. Christenhusz et al., 2011: 57.
							 | 
					
					
						| Cycadaceae (Family) Pers. (1807), nom. cons. | 
							Ref: 
								
									D.J. Mabberley, 2008: 242.
								 | 
						
						
							| Cycadaceae (Family) Pers. (1807), nom. cons. | 
								Ref: 
									
										A.B. Doweld, 2001: XII (footnote **).
									 [implicit] | 
							
							
								| Cycadophyta (Phylum) Bessey (1907) | 
									Ref: 
										
											L. Margulis & K.V. Schwartz, 1982: 260.
										 [rough position] | 
								
								
									| Cycadaceae (Family) Pers. (1807), nom. cons. | 
										Ref: 
											
												T.A. Zanoni, 1982: 349.
											 | 
									
									
										| Pennatifoliae (Order) L. (1753), nom. inval. | 
											Ref: 
												
													C. Linnaeus, 1753b: 1188.
												 | 
										
									
									Number of Subtaxa