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

by Paul S. Mikkelsen

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Term Definition

RIB-STRIAE   Transverse undulations of the shell surface which are more prominent than STRIAE but less prominent than RIBS; see also: STRIAE; RIB; RIBLET.

(pl. STRIAE)
  Very narrowly INCISED shallow groove (Cox, 1960); this term especially used to refer to one of a series of parallel or concentric grooves (= striae); see also: LIRA; GROOVE; RIB-STRIAE; RIB.

STRIA, AXIAL   [need definition]. See illustration: Composite Gastropod.

STRIA, RADIAL   A STRIA emanating outward from a central point of origin, usually along with other striae. See illustration: Composite Bivalve.

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