An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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by Paul S. Mikkelsen |
Term | Definition |
CORRUGATE | Folded or ridged on the surface; broadly or heavily sculptured with FOLDS. | |
GROWTH RUGA | Irregular wrinkle on surface of shell, of similar origin to growth line, but corresponding to more pronounced hiatus in growth; see also: RUGA. | |
RUGA (pl. RUGAE) |
An irregular fold in the surface SCULPTURE. | |
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