Order: Cell body without theca (Illustrations of The Japanese Fresh-water Algae, 1977).
Family:
Genus:

->> Description at WPRNO

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Gyrodinium sp. 44 x 44 μm Kuromi river Saitama, 1998

Gyrodinium sp. ? 48 x 40 μm Kowashimizu Suwa Nagano, 2005

Gyrodinium sp. ? 30 x 26 μm Matsumoto Nagano, 2001

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