Opisthobranchia

Of class and Gastropoda.   May also be referred to as subclass Opisthobranchia.

Gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares.

This concept's ID is @1~9936

Contains

  • Nudibranchia 3 facts

    Comprising numerous marine gastropod mollusks lacking a shell in the adult state and...