Phylum Mollusca Linnaeus, 1758 - molluscs
Subphylum Conchifera Gegenbauer, 1878
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Orthogastropoda Ponder & Lindberg, 1995
Superorder Heterobranchia Burmeister, 1837
Order Heterostropha Fischer, 1885
Superfamily Pyramidelloidea Gray, 1840
Family Tjaernoeidae Warén, 1991, orth. inval.
see Family Tjaernoeiidae Warén, 1991