An Illustrated and Cross-Referenced Glossary of
Malacological and Conchological Terms

by Paul S. Mikkelsen

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Term Definition

EQUILATERAL   In bivalves, having the anterior and posterior ends of equal size; see also: EQUIVALVE; INEQUILATERAL; SUBEQUILATERAL.

INEQUILATERAL   In bivalves, having the parts of the shell anterior and posterior to the beaks differing appreciably in length; see: INEQUIVALVE; SUBEQUILATERAL.

SUBEQUILATERAL   Applied to bivalve shells which are nearly equal in size; see also: EQUILATERAL; INEQUILATERAL; INEQUIVALVE.

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