Concise hierarchy
	(Kingdom) Animalia - (Phylum) Arthropoda - (Class) Insecta
Original entries
Current position
	Alternative positions
	
		
			| Exopterygota (Division) Sharp, 1899 | 
				 | 
		
		
			| Exopterygota ([unranked]) | 
				Ref: 
					
						P. Smart, 1989 (1975): 16.
					 [out of scope (coherent)] | 
			
			
				| Hemimetabola (Division) | 
					Ref: 
						
							T.I. Storer et al., 1979: 588.
						 | 
				
				
					| Insecta (Class) Linnaeus, 1758 | 
						Ref: 
							
								Z.-Q. Zhang, 2013: 21.
							 | 
					
					
						| Neoptera (Division) Martynov, 1923 | 
							Ref: 
								
									R.W. Poole et al., 1997: 16.
								 | 
						
						
							| Neoptera (Subclass) Martynov, 1923 | 
								Ref: 
									
										R.S. Boardman et al., 1987
									 | 
							
							
								| Orthopterodea (Superorder) | 
									Ref: 
										
											R.C. Brusca & G.J. Brusca, 1990
										 | 
								
								
									| Orthopteroida (Superorder) | 
										Ref: 
											
												D.K.McE. Kevan, 1977
											 | 
									
									
										| Orthopteroidea (Superorder) | 
											 | 
									
								
								Historical positions
								
									
										| Insecta (Class) Linnaeus, 1758 | 
											Ref: 
												
													Z.-Q. Zhang, 2013: 21.
												 | 
										
										
											| Insecta (Class) Linnaeus, 1758 | 
												Ref: 
													
														Z.-Q. Zhang, 2011: 101.
													 | 
											
											
												| Orthopterida (Superorder) Boudreaux, 1979 | 
													Ref: 
														
															D. Grimaldi & M.S. Engel, 2005: table 4.1, fig. 7.3.
														 | 
												
												
													| Exopterygota (Division) Sharp, 1899 | 
														Ref: 
															
																M. Chinery, 1997
															 | 
													
													
														| Neoptera (Division) Martynov, 1923 | 
															Ref: 
																
																	R.W. Poole et al., 1997: 16.
																 | 
														
														
															| Orthopterodea (Superorder) | 
																Ref: 
																	
																		R.C. Brusca & G.J. Brusca, 1990
																	 | 
															
															
																| Neoptera (Subclass) Martynov, 1923 | 
																	Ref: 
																		
																			R.S. Boardman et al., 1987
																		 | 
																
																
																	| Orthopterodea (Superorder) | 
																		Ref: 
																			
																				D.K.McE. Kevan, 1982: 352-353.
																			 | 
																	
																	
																		| Insecta (Class) Linnaeus, 1758 | 
																			Ref: 
																				
																					L. Margulis & K.V. Schwartz, 1982: 226.
																				 | 
																		
																		
																			| Hemimetabola (Division) | 
																				Ref: 
																					
																						T.I. Storer et al., 1979: 588.
																					 | 
																			
																			
																				| Orthopteroida (Superorder) | 
																					Ref: 
																						
																							D.K.McE. Kevan, 1977
																						 | 
																				
																				
																					| Exopterygota ([unranked]) | 
																						Ref: 
																							
																								P. Smart, 1989 (1975): 16.
																							 [out of scope (coherent)] | 
																					
																					
																						| Insecta (Class) Linnaeus, 1758 | 
																							Ref: 
																								
																									A.N. Caudell, 1912
																								 | 
																						
																					
																					Number of Subtaxa
																					
																						
																							| 
																								      2025 | 
																							
																								
																									Available in Systema Naturae 2000
																							 | 
																							48f;2699g;6751s;1229ss; †34f;287g;9s | 
																						
																							| 
																								1989-present | 
																							
																								
																									Systema Naturae 2000
																							 | 
																							[30f;~21,000s] | 
																						
																							| 
																								2013 | 
																							
																								
																									Z.-Q. Zhang: 21
																							 | 
																							24,481*[23,830]s; †651s | 
																						
																							| 
																								2011 | 
																							
																								
																									Z.-Q. Zhang: 101
																							 | 
																							24,276*[23,855]s; †421s | 
																						
																							| 
																								2005 | 
																							
																								
																									D. Grimaldi & M.S. Engel
																							 | 
																							[30f;~21,000s] | 
																						
																							| 
																								2000 | 
																							
																								
																									
																							 | 
																							72s; †2s | 
																						
																							| 
																								1990 | 
																							
																								
																									R.C. Brusca & G.J. Brusca
																							 | 
																							~20,000s | 
																						
																							| 
																								1982 | 
																							
																								
																									D.K.McE. Kevan
																							 | 
																							[2so64f]>18,000[-20,000]s | 
																						
																							| 
																								1979 | 
																							
																								
																									T.I. Storer et al.
																							 | 
																							50f;23,000s |