Odostomia optata Yokoyama
| 1932. | Odostomia optata Yokoyama |
| Condition: | Present |
| Taxonomy: | Mollusca: Gastropoda: Pyramidellidae: |
| Geologic Time: | Cenozoic: |
| Otuka, Y., 1932: On the shells of fossiliferous strata, 15m. below the earth's surface, in Gobancho, Kojimachi-ku, Tokyo. Venus, vol. 3, no. 2, pp. 109–112. (in Japanese) (Reference No. 0382) |
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| Ichikawa, T., 1983, no. 9, p. 77. |
