Concise hierarchy
	(Kingdom) Plantae - (Phylum) Mesostigmatophyta - (Class) Mesostigmatophyceae - (Order) Mesostigmatales - (Family) Mesostigmataceae
Subsequent positions
Current position
	Alternative positions
	
						Historical positions
						
							
								| Mesostigmatophyceae (Class) B.Marin & M. Melkonian (1999) | 
									Ref: 
										
											F. Leliaert et al., 2012: 20, 21, fig. 3.
										 [rough position] | 
								
								
									| Chloroplastida ([unranked]) S.M. Adl et al., 2005 | 
										Ref: 
											
												R.M. McCourt, 2005: 422.
											 [emended diagnosis] | 
									
									
										| viridophytes ([unranked]) | 
											Ref: 
												
													C.F. Delwiche et al., 2004: 129, 131, fig. 9.2a.
												 [implicit] | 
										
										
											| green plants ([unranked]) | 
												Ref: 
													
														J. Cracraft & M.J. Donoghue, 2004: 129, 131, fig. 9.2a.
													 | 
											
											
												| Polyblepharidaceae (Family) P.A. Dangeard | 
													Ref: 
														
															H. Nozaki, 2003: 228.
														 | 
												
												
													| Mesostigmataceae (Family) Fott ex Moestrup & Throndsen | 
														Ref: 
															
																Ø. Moestrup, 2000: 1259.
															 | 
													
													
														| Chlorophytina (Subphylum) T. Cavalier-Sm. (1998) | 
															Ref: 
																
																	T. Cavalier-Smith, 1998: table 6 (p. 250).
																 [rough position] | 
														
														
															| Mesostigmataceae (Family) Fott ex Moestrup & Throndsen | 
																Ref: 
																	
																		M. Melkonian, 1990: 600.
																	 | 
															
															
																| Pyramimonadaceae (Family) Korshikov | 
																	Ref: 
																		
																			R.E. Norris, 1982: 163.
																		 | 
																
																
																	| Flagellatae (Division) | 
																		Ref: 
																			
																				A. Pascher, 1913: [182]; 6.
																			 | 
																	
																
																Number of Subtaxa