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Mantle

Lunate

 

Marginal lamina

The downturned side of the valve surrounding the valve face. When a frustule is viewed in girdle view, the mantle is visible.


Citations

Round, F.E., Crawford, R.M. and Mann, D.G. (1990). The Diatoms. Biology and Morphology of the Genera. Cambridge University Press, Cambridge, 747 pp.