Concise hierarchy
	(Kingdom) Animalia - (Phylum) Mollusca - (Class) Gastropoda
Current position
	Alternative positions
	
			Historical positions
			
				
					| Apogastropoda ([unranked]) Salvini-Plawen & Haszprunar, 1987 | Ref: 
							
								S.W. Aktipis et al., 2008: 207-208, fig. 9.3; 9, 203. | 
					
						| Gastropoda ([unranked]) Cuvier, 1795 | Ref: 
								
									P. Bouchet & J.-P. Rocroi, 2005: 3, 209, 257. | 
						
							| Apogastropoda ([unranked]) Salvini-Plawen & Haszprunar, 1987 | Ref: 
									
										M. Thollesson, 1999: 79.
									 [out of scope (coherent)] | 
						
						Number of Subtaxa