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Staurosira
Genus, Diatom, Terrestrial
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Stenopterobia
Genus, Diatom, Terrestrial
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Stephanodiscus
Genus, Diatom, Terrestrial
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Surirella
Genus, Diatom, Marine, terrestrial
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Synedra
Genus, Diatom, Terrestrial
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Synedropsis
Genus, Diatom, Terrestrial
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Tabellaria
Genus, Diatom, Marine, terrestrial
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Tabularia
Genus, Diatom, Terrestrial
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Toxarium
Genus, Diatom, Terrestrial
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Tryblionella
Genus, Diatom, Marine, terrestrial
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Ulnaria
Genus, Diatom, Terrestrial