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Description of Coscinodiscus wailesii

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Cells are often as high as wide. Cells are rectangular in outline or with an undulating margin, depending on the focal plane. In girdle view a prominent hyaline area is visible at the centre of the valve with wide interstriae radiating from it, resulting in an irregular fasciculation, 5-6- valve areolae are present in 10µm. Areolae are small but cribra are still visible with the light microscope. there are two marginal rings of processes. The outer ring contains two larger rings of processes that are 120-180 degrees apart. Chloroplast shape is irregular.
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