Phylum Mollusca Linnaeus, 1758 - molluscs
Class Gastropoda Cuvier, 1795 - snails and slugs
Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs
see Order Opisthobranchia Milne-Edwards, 1848
Order Notaspidea Fischer, 1883 [monotypic]
see Suborder Notaspidea Fischer, 1883
Superfamily Pleurobranchoidea Gray, 1827
Family Pleurobranchidae Gray, 1827
Tribe Berthellini Burn, 1962
Genus Berthellina Gardiner, 1936