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Gomphonema sp.

genus Gomphonema C. G. Ehrenberg, 1832

• Modern species
• Habitat: Marine, Freshwater

• Classification
• kingdom Chromista, phylum Ochrophyta, class Bacillariophyceae, order Cymbellales, family Gomphonemataceae

• Distribution
• Miocene-Pliocene: Nagano
• Pleistocene: Nagano, Ishikawa, Gunma, Tochigi

• Subtaxa
• G. acuminatum var. brebissonii
• G. intricatum
• G. olivaceum