Reference : - #017 Mizutani, Uemura and Yamamoto (1984)

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#017 1984, Mizutani, S., Uemura, T. and Yamamoto, H., Jurassic radiolarians from the Tsugawa area, Niigata Prefecture, Japan. Earth Science, vol.38, p.352-358, pl.1, text-fig.1-2.

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