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Cylichnatys angusta (Gould, 1859) Oyama, K., 1973 p. 68, pl. 19, fig. 24a-d Cenozoic | Mollusca : Gastropoda : Scaphandridae Material Reports, no. 9, p. 118. |
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Cylichnatys yamakawai (Yokoyama, 1920) Syntype Taki, I. & Oyama, K., 1954 pl. 2, fig. 7a-d Cenozoic | Mollusca : Gastropoda : Scaphandridae Material Reports, no. 9, p. 186. |
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