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Oshikiri Shell Bed Tokunaga, 1958

• Type locality: Oshikiri, Obanazawa city, Yamagata prefecture
• Coherent formation
• Miocene

• Sedimentary facies: Marine
• Sedimentary facies: Drift-type shell bed
• Lithofacies: Sandstone, Conglomerate

• Thickness: ca. 10 - 20 m
• Distribution (East-West): ca. 3 km

------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown

• Distribution: Oshikiri, Obanazawa city, Yamagata pref.
• Fossils (Shellfishes): Chlamys cf. kaneharai, Coptothyris grayi, Lima cfr. sowerbyi, Ostrea spp., Patinopecten paraplebejus, Pecten yanagawaensis, Spisula sp.

• Tokunaga (1958) Obanazawa, Explanatory Text of the Geological Map of Japan, Scale 1:50,000, Geological Survey of Japan, 32p. (in Japanese with English abstract 6p.)