Superfamily Plectopyloidea Möllendorff 1898 (slug)
Parent taxon: Helicina according to P. Bouchet et al. 2017
See also Conrad et al. 2013
Sister taxa: Clausilioidei, Helicoidei, Limacoidei, Oleacinoidei, Orthalicoidei, Punctoidea, Pupilloidei, Rhytidoidei, Succineoidei, Testacelloidea, Urocoptoidea
Subtaxa: Plectopylidae
Ecology: epifaunal
Distribution:
• Quaternary of Thailand (2 collections)
Total: 2 collections each including a single occurrence