Kingdom Animalia Linnaeus, 1758 - animals
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
see Suborder Notaspidea Fischer, 1883
Genus Berthellina Gardiner, 1936
Genus Pleurobranchus Cuvier, 1804
Genus Tylodina Rafinesque, 1814
Genus Umbraculum Schumacher, 1817