Phylum Mollusca Linnaeus, 1758 - molluscs
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Prosobranchia Milne-Edwards, 1848 - prosobranchs
see Class Gastropoda Cuvier, 1795
Order Neogastropoda Wenz, 1938
see Suborder Neogastropoda Wenz, 1938
Suborder Stenoglossa Bouvier, 1887
Superfamily Cancellarioidea Forbes & Hanley, 1851 [monotypic]
Family Cancellariidae Forbes & Hanley, 1851 - nutmeg snails
Subfamily Plesiotritoninae Beu & Maxwell, 1987
1 Genus †Plesiotriton Fischer, 1884
2 Genus Africotriton Beu & Maxwell, 1987
3 Genus Tritonoharpa Dall, 1908
4 Genus †Turehua Marwick, 1943
5 Genus †Varicohilda Eames, 1957
6 Genus †Kapuatriton Beu & Maxwell, 1987
7 Genus †Loxotaphrus Harris, 1897