An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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by Paul S. Mikkelsen |
Term | Definition |
PTEROPOD | A member of the group of pelagic gastropods (Pteropoda) known as "SEA BUTTERFLIES" and belonging to the orders Thecosomata and Gymnosomata; see also: HETEROPOD. | |
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