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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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Crat_ambig_WinR_6-28-2012_F2012b_050.jpg
Species
Craticula ambigua
Caption
Valve view of living
C. ambigua
from the Winnebago River, Iowa.
Credit
Stephen Main