Classification
Mollusca [filum]Gastropoda [klas]
Heterobranchia [onderklas]
[unassigned] Heterobranchia [orde]
Orde [unassigned] Heterobranchia contains the following taxa:
Acteonoidea [superfamilie]
Murchisonelloidea [superfamilie]
Omalogyroidea [superfamilie]
Pyramidelloidea [superfamilie]