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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
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What are diatoms?
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polar_bar1_copy.jpg
Glossary Term
Polar bar
Caption
Scanning electron micrograph of
Sellaphora wallacei
showing the polar bar at the apex.
Credit
Marina Potapova
