Diatom Image Database   Click on an image to see a larger version
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Coscinodiscus centralis EhrenbergCoscinodiscus concavus EhrenbergCoscinodiscus concinnus W. SmithCoscinodiscus concinnus W. Smith
Coscinodiscus excavatus Ralfs in PritchardCoscinodiscus labyrinthus RoperCoscinodiscus lacustris Grunow in Cleve and GrunowCoscinodiscus radiatus Ehrenberg