Katsura Ōyama (大山 桂, Ōyama Katsura; October 6, 1917 – December 30, 1995) was a Japanese paleontologist and zoologist, best known for his work on the Tertiary and Recent Mollusca of Japan.
Source: “Katsura Ōyama”, English Wikipedia (CC BY-SA 4.0), excerpt
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