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Gastropods having the gills when present posterior to the heart and having no operculum includes sea slugs
Answer for the clue "Gastropods having the gills when present posterior to the heart and having no operculum includes sea slugs ", 15 letters:
opisthobranchia
Alternative clues for the word opisthobranchia
Word definitions for opisthobranchia in dictionaries
Wikipedia
Word definitions in Wikipedia
Opisthobranchs are a large and diverse group of specialized complex gastropods that used to be united in the subclass Opisthobranchia , but are no longer considered to represent a monophyletic grouping because it contains land snails and slugs, the Pulmonata ...
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Opisthobranchia \O*pis`tho*bran"chi*a\, Opisthobranchiata \O*pis`tho*bran`chi*a"ta\, n. pl. [NL., from Gr. 'o`pisqen behind + ? gills.] (Zo["o]l.) A division of gastropod Mollusca, in which the breathing organs are usually situated behind the heart. ...