Concise hierarchy
	(Kingdom) Chromista - (Phylum) Cercozoa - (Class) Phytomyxea
Subsequent positions
Current position
	Alternative positions
	
		Historical positions
		
			
				| Phytomyxea (Class) Engler & Prantl, 1897 | 
					Ref: 
						
							M.A. Ruggiero et al., 2015b: table 2 (p. 20).
						 | 
				
				
					| Phytomyxea (Class) Engler & Prantl, 1897 | 
						Ref: 
							
								P.M. Kirk et al., 2008: 760.
							 | 
					
					
						| Phytomyxea (Class) Engler & Prantl, 1897 | 
							Ref: 
								
									T. Cavalier-Smith & E.E.-Y. Chao, 2003
								 | 
						
						
							| Plasmodiophorea (Class) | 
								Ref: 
									
										J.P. Braselton, 2000: 1342.
									 | 
							
							
								| Phytomyxea (Class) Engler & Prantl, 1897 | 
									Ref: 
										
											T. Cavalier-Smith, 1995: table (p. 1013).
										 | 
								
								
									| Phytomyxea (Class) Engler & Prantl, 1897 | 
										Ref: 
											
												T. Cavalier-Smith, 1993b: table 4 (p. 970).
											 [new position] | 
									
									
										| Plasmodiophorea (Class) | 
											Ref: 
												
													L.S. Olive, 1982: 525.
												 [alternative name] | 
										
									
									Number of Subtaxa