An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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by Paul S. Mikkelsen |
Term | Definition |
TECTIBRANCH | Molluscs of the order Cephalaspidea, or "BUBBLE SHELLS" usually having a shell present, gills present, head with a tentacular shield, jaws feeble or none, stomach usually with GIZZARD PLATES, and with or without an OPERCULUM. | |
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