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Hayasaka, I. (1925). On some Paleozoic molluscs of Japan. I. Lamellibranchiata and Scaphopoda. The Science Reports of the TÅhoku University, Series 2, Geology. 9: 85-113.
Hayasaka, I. (1925). On some Paleozoic molluscs of Japan. I. Lamellibranchiata and Scaphopoda. The Science Reports of the TÅhoku University, Series 2, Geology. 9: 85-113.