Penicillus giganteus (Sowerby)
| 1958. | Penicillus giganteus (Sowerby) Makiyama, J. 1958 pl. 54, fig. 1, 1a |
| 1926. | Aspergillum giganteum Pilsbry Yokoyama, M. 1926h p. 368, pl. 42, fig. 1, 1a |
| Condition: | Missing |
| Taxonomy: | Mollusca: Bivalvia: Clavagellidae: |
| Geologic Time: | Cenozoic: |
| Makiyama, J., 1958: Matajiro Yokoyama's Tertiary fossils from various localities in Japan. Part 2. Palaeontological Society of Japan, Special Papers, no. 4, pp. 1–6, pls. 25–57. (Reference No. 0368) |
| Yokoyama, M., 1926h: Tertiary shells from Tosa. Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 1, pt. 9, pp. 365–368, pl. 42. (Reference No. 0485) |
 |
| Ichikawa, T., 1983, no. 9, p. 56. |
| Ichikawa, T., 1983, no. 9, p. 339. |
