Families:
Hydatinidae
Aglajidae
Gastropteridae

Order:
Cephalaspidea
(Headshield Slugs)

Subclass:
Opisthobranchia
(Opisthobranchs)

Class:
Gastropoda
(Univalves)

Phylum:
Mollusca
(Molluscs)

* Click thumbnails
to enlarge.

» Dorids
(Doridina)

» Dendronotids
(Dendronotina)

» Arminaceans
(Arminina)

» Aeolids
(Aeolidina)

» Headshield Slugs
(Cephalaspidea)

» Side-gilled Slugs
(Notaspidea)

» Sapsuckers
(Sacoglossa)