subclass Opisthobranchia meaning

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subclass Opisthobranchia (noun): gastropods having the gills when present posterior to the heart and having no operculum: includes sea slugs; sea butterflies; sea hares.

Definition of subclass Opisthobranchia

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

    Synonyms: Opisthobranchia

    Type of: class

More about subclass Opisthobranchia on Wikipedia.