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Thalassiosira antarctica Comber, 1896

(Syn. Thalassiosira fallax Meunier, 1910)...

Thalassiosira antiqua (Grunow) Cleve var. septata Pr.-Lavr., 1955

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Thalassiosira baltica (Grunow) Ostenfeld, 1901

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Thalassiosira decipiens (Grunow) E.G.Jørgensen, 1905

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Thalassiosira excentrica (Ehrenberg) Cleve, 1903

(syn. Thalassiosira eccentrica (Ehrenberg) Cleve 1904: 216 (as excentrica ) )...

Thalassiosira fallax Meunier, 1910

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Protoperidinium granii (Ostenfield, 1906) Balech, 1974

The cells are wide. Epivalva and hipovlava are almost the same size. The transverse groove is curved...
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