Phylum Mollusca Linnaeus, 1758 - molluscs
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs
see Class Gastropoda Cuvier, 1795
Superorder Archaeogastropoda Thiele, 1925
Order Vetigastropoda Salvini-Plawen, 1980 - archaeogastropods s.l.
Superfamily Trochoidea Rafinesque, 1815
Family Turbinidae Rafinesque, 1815 - turban snails
Subfamily Turbininae Rafinesque, 1815
Genus Opella Finlay, 1926