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    Eucampia, a chain-forming diatom
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    Thalassionema, a chain diatom
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    Chaetoceros, a diatom common in northeastern U.S. waters
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    Thalassiosira, a chain-forming diatom
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    Pleurosigma, a single-celled diatom found in costal northeast waters
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    The diatom Licmophora, found in coastal waters off Woods Hole, Mass.

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