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Diatoms of North America
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Morphology
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Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
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Tryblionella_apiculata_figure.jpg
Species
Tryblionella apiculata
Caption
from: Gregory, W. 1857 On the Post-Tertiary Diatomaceous Sand of Glenshira. Part II. Transactions of the Microscopical Society of London 5:67-88, pl. I.