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Diatoms of North America
Practitioners
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Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
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butterfly-structure-tursiocola.jpg
Glossary Term
Butterfly structure
Caption
Interior of central area of a valve of
Tursiocola ziemanii
(SEM). The butterfly structure connects the stauros with the valve margin. Scale bar = 1µm.
Credit
Tom Frankovich
