Concise hierarchy
	(Kingdom) Chromista - (Phylum) Retaria - (Class) Acantharea
Subsequent positions
Current position
	Alternative positions
	
			Historical positions
			
				
					| Acantharea (Class) Haeckel, 1881 | Ref: 
							
								M.A. Ruggiero et al., 2015b: table 2 (p. 21). | 
					
						| Acantharea (Class) Haeckel, 1881 | Ref: 
								
									C. Febvre et al., 2000: 791; [783]. | 
						
							| Holacanthia (Subclass) Cavalier-Smith, 1993 | Ref: 
									
										T. Cavalier-Smith, 1993b: table 4 (p. 972).
									 [new position] | 
							
								| Acantharia (Class) Haeckel, 1881 | Ref: 
										
											J. Cachon & M. Cachon, 1982: 554, 556, pl.54. | 
							
							Number of Subtaxa