|
An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
|||
| by Paul S. Mikkelsen | |||
| Term | Definition |
| DISSOCONCH | The postlarval shell of bivalves (and scaphopods?). See illustration: Composite Bivalve. See also: MESOCONCH; NEPIOCONCH; PRODISSOCONCH. | |
| PRODISSOCONCH | A shell secreted by the LARVA or embryo and preserved at the BEAK of some adult bivalve shells or scaphopod shells; identical with VELICONCH when larva is PELAGIC. See illustration: Composite Bivalve. See also: DISSOCONCH; MESOCONCH; NEPIOCONCH; PRODISSOCONCH I; PRODISSOCONCH II; PROTOCONCH; VELICONCH. | |
| PRODISSOCONCH I | Earlier-formed part of prodissoconch, secreted by the SHELL GLAND of the LARVA; = PRODISSOCONCH; PROTOSTRACUM; PRODISSOCONCH II. | |
| PRODISSOCONCH II | Later-formed part of PRODISSOCONCH, secreted by the MANTLE edge; see also: PRODISSOCONCH I. | |
| Copyright ©Paul S. Mikkelsen, All Rights Reserved | Return to Home Page | Return to Top | Over 1700 Terms in the Glossary! |