Trophonopsis ( Boreotrophon ) felix Yokoyama
| 1959. | Trophonopsis (Boreotrophon) felix Yokoyama Syntype Makiyama, J. 1959 pl. 63, fig. 8a |
| 1927. | Trophon felix Yokoyama, 1927 Syntype Yokoyama, M. 1927e p. 196, pl. 52, fig. 8a |
| Condition: | Missing |
| Taxonomy: | Mollusca: Gastropoda: Muricidae: |
| Geologic Time: | Cenozoic: |
| Horizon: | Lower or Upper Chikubets formation: |
| Makiyama, J., 1959: Matajiro Yokoyama's Tertiary fossils from various localities in Japan. Part 3. Palaeontological Society of Japan, Special Papers, no. 5, pp. 1–4, pls. 58–86. (Reference No. 0369) |
| Yokoyama, M., 1927e: Tertiary shells from the coal-field of Haboro, Teshio. Journal of the Faculty of Science, Imperial University of Tokyo, Section 2, vol. 2, pt. 4, pp. 191–204, pls. 51–52. (Reference No. 0492) |
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| Ichikawa, T., 1983, no. 9, p. 63. |
| Ichikawa, T., 1983, no. 9, p. 367. |
