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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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Valles-Caldera.jpg
Species
Tetracyclus emarginatus
Caption
Valles Caldera, New Mexico - site of Pleistocene-aged core samples.
Credit
Dr. Peter Fawcett
