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Stephanodiscus sp.

genus Stephanodiscus C. G. Ehrenberg, 1845

• Modern species: Pleistocene - Present (13.7 - 0.0 Ma)
• Habitat: Marine, Freshwater

• Classification
• kingdom Chromista, phylum Ochrophyta, class Bacillariophyceae, order Thalassiosirales, family Stephanodiscaceae

• Distribution
• Pliocene: Gifu
• Pleistocene: Tochigi, Shiga, Okayama
• Investigation in progress: Nagano

• Subtaxa
• S. astraea
• S. carconensis
• S. hantzschii
• S. niagarae