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Diatoms of North America
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Araphid
Eunotioid
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Asymmetric Biraphid
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Citation
Ehrenberg, C.G. (1836) Vorläufige mittheilungen über das wirkliche vorkommen fossiler infusorien und ihre grofse verbreitung
In: Annalen der Physik und Chemie. Folge 2. Band 38. J.C. Poggendorf Ed., 628 pp.
Species
Ulnaria capitata