Genus:

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C. naviculiformis ? 72 x 22 μm Iruma river Sayama Saitama, 2004

C. naviculiformis ? 70 x 22 μm riverside park Kuroiso Tochigi, 2005

Cymbella sp. C. naviculiformis ? 63 x 20 μm Showa-machi g.p. Showa Saitama, 2003

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