| Pulvinifera ([unranked]) | Ref: 
															
																E.E. Ruppert et al., 2004: 490-495, 502, fig. 9.26B.
															 [implicit] | 
													
																| Trochozoa ([unranked]) Beklemischev, 1944 | Ref: 
																		
																			G. Giribet et al., 2000: 551, fig. 4; 544, tab. 1. | 
																
																					| Protostomia ([unranked]) Grobben, 1908 | Ref: 
																							
																								R.C. Brusca & G.J. Brusca, 1990: 118.
																							 [alternative position] |