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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
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What are diatoms?
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Round_1990_valvocopulae.jpg
Glossary Term
Valvocopula
Caption
Illustration of a diatom frustule showing the two valvocopulae in dark blue.
Credit
Adapted from Round et al. 1990.
