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Obonai flora

• Type locality: Ainai creek, Tazawako, Senboku city, Akita prefecture
• Strata: Ainaizawa Formation
• Pleistocene

• [ Index fossils ]

• Suto and Ishii (1987) Geology of the Shizukuishi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, 142p. (in Japanese with English abstract 5p.)