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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 |
| BYSSAL SINUS | Embayment of margin below anterior auricle of left valve in many Pectinacea, corresponding to byssal notch of right valve but usually shallower; see also: BYSSAL FORAMEN; BYSSAL GAPE; BYSSAL NOTCH. | |
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