Phylum Mollusca Linnaeus, 1758 - molluscs
Subphylum Conchifera Gegenbauer, 1878
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Orthogastropoda Ponder & Lindberg, 1995
Superorder Cocculiniformia Haszprunar, 1987
see Superfamily Cocculinoidea Dall, 1882
Superfamily Lepetelloidea Dall, 1882
Family Addisoniidae Dall, 1882
1 Subfamily Addisoniinae Dall, 1882
2 Subfamily Helicopeltinae Marshall, 1996