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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
Species
Glossary
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What are diatoms?
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apical_axis.jpg
Glossary Term
Apical axis
Caption
Navicula
is symmetrical to the apical axis. The black line runs along the apical axis.
Credit
Marina Potapova
