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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 |
| ANISOMYARIAN | The condition, in bivalve molluscs, of having adductor muscle scars of unequal size, with the posterior one usually being the larger of the two; see also: MONOMYARIAN; DIMYARIAN; HETEROMYARIAN. | |
| ISOMYARIAN | Descriptive of a bivalve shell having two adductor muscle scars on the inner surface which are approximately equal in size; = HOMOMYARIAN. | |
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