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

by Paul S. Mikkelsen

Look for:  
Search results for:   POSTERIOR       5 terms were found.

Term Definition

POSTERIOR   Toward the apical end of, in coiled gastropod shells, or the siphonal end of, in bivalves; opposite of ANTERIOR; see also: OPISTHODETIC; for bivalves, see also: MARGINAL CARINA; CORSELET.

POSTERIOR CANAL   = ANAL SULCUS; = ANAL CANAL. See illustration: Composite Gastropod. See also: ANTERIOR CANAL.

POSTERIOR LATERAL TOOTH   LATERAL TOOTH situated posteriorly to beaks and (in heterodonts) posterior to the LIGAMENT.

POSTERIOR RIDGE   A ridge, in bivalves, passing over or originating near the umbo and running diagonally towards the posteroventral part of the valve; see also: CORSELET.

POSTERIOR SLOPE   Sector of surface of valve (of bivalves) running posteroventrally from UMBO; see also: CORSELET.

Copyright ©Paul S. Mikkelsen, All Rights Reserved Return to Home Page  |  Return to Top Over 1700 Terms in the Glossary!