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 Cocculiniformia Hazsprunar, 1987
see Superorder Cocculiniformia Haszprunar, 1987
Superfamily Lepetelloidea Dall, 1882
Family Addisoniidae Dall, 1882 [monotypic]
1 Genus Addisonia Dall, 1882