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Bacillariophyta—the diatoms

Bacillariophyta—the diatoms

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Ceratium<br />

cells armoured, with a sculptured cellulose<br />

wall often consisting of several plates,<br />

perforated with pores, and with deep<br />

transverse and longitudinal grooves<br />

large (>100 microns) with lobe like<br />

extensions “horns”<br />

> 100 microns long<br />

In the plankton of lakes and ponds

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