Author: OBATA, I.
Title: Lower Cretaceous ammonites from the Miyako Group. 5. Diadochoceras.
Description: 1975. Bull. Natn. Sci. Mus. Ser. C (Geol.), 1 (1); pp. 1-10, 2 fig. 3 plts. h.t. Attached: Obata et al.: Geological age of the Cretaceous Coshi Group: pp. 17-36 in Japanese with English summary, 5 plts. h.t. with ammonites. Orig. wrps. with small name ticket on cover, contents very good.

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