Harpoceras sp.
| 1904. | Harpoceras sp. Yokoyama, M. 1904b p. 14, pl. 4, fig. 1 |
| Condition: | Present |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Mesozoic: |
| Yokoyama, M., 1904b: Jurassic ammonites from Echizen and Nagato. Journal of the College of Science, Imperial University of Tokyo, vol. 19, art. 20, pp. 1–17, pls. 1–4. (Reference No. 0331) |
 |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 301. |
