Infraorder Succineoidei (slug)
Synonym: Elasmognatha Morch 1864
Parent taxon: Helicina according to P. Bouchet et al. 2017
See also Bouchet et al. 2005
Sister taxa: Arionoidei, Clausilioidei, Helicoidei, Limacoidei, Oleacinoidei, Orthalicoidei, Plectopyloidea, Punctoidea, Pupilloidei, Rhytididae, Rhytidoidei, Testacelloidea, Urocoptoidea
Subtaxa: Athoracophoroidea Succineoidea
Ecology: epifaunal