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Oyama, K. (1950). Studies of fossil molluscan biocoenosis, No. 1. Biocoenological studies on the mangrove swamps, with descriptions of new species from Yatuo Group. Reports, Geological Survey of Japan. 132: 1-16, pls. 1-3.
Oyama, K. (1950). Studies of fossil molluscan biocoenosis, No. 1. Biocoenological studies on the mangrove swamps, with descriptions of new species from Yatuo Group. Reports, Geological Survey of Japan. 132: 1-16, pls. 1-3.
