an Entity references as follows:
After excluding groups not related, the informal group Sigmurethra has become the suborder Helicina, with the following infraorders and a collection of families with no superfamily: * Suborder Helicina ("Non-Achatinoid Clade") * Infraorder * Infraorder * Infraorder : formed from Helicoidea Rafinesque, 1815 and Sagdoidea Pilsbry, 1895 * Infraorder Limacoidei: formed from original * Infraorder * Oleacinoidea: formed from original Testacelloidea but with the family Testacellidae excluded; * : formed from original Rhytidoidea and Haplotrematidae * Infraorder * Infraorder Pupilloidei (Orthurethra) * Infraorder : formed by Rhytidoidea merging with contents from Acavoidea. * Infraorder (Elasmognatha) * Infraorder Helicina (temporary name)