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 Trochidae Rafinesque, 1815 - top snails
Subfamily Margaritinae Thiele, 1924, nom. cons. prop.
Tribe Gazini Hickman & McLean, 1990 [monotypic]
Genus Gaza Watson, 1879
1 Subgenus Callogaza Dall, 1881