| Term | Definition |
| BIROSTRATE | Having two ROSTRUMS. | |
| ROSTRATE | Having a beak-like projection (as in a long, straight SIPHONAL CANAL, e.g. Cuspidaria spp.); = NUCULANIFORM; see also: BEAK. See other bivalve shapes. | |
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An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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| by Paul S. Mikkelsen | |||
| Term | Definition |
| BIROSTRATE | Having two ROSTRUMS. | |
| ROSTRATE | Having a beak-like projection (as in a long, straight SIPHONAL CANAL, e.g. Cuspidaria spp.); = NUCULANIFORM; see also: BEAK. See other bivalve shapes. | |
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