- primary riblet
-
(MOLLUSCA: Bivalvia)In shells with various strength of riblets, the riblet appearing early in development and remaining stronger than later ones.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.
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