Sentence Examples with the word Pteropoda

On the other hand, Boas and Pelseneer have shown that the Pteropoda have nothing to do with the Cephalopoda, but are Gastropoda modified for a pelagic life; they are therefore now united with the Gastropoda.

The Thecosomatous Pteropoda are allied to Bulla, the Gymnosomatous forms to Aplysia.