Gravicalymene yamakoshii Kobayashi & Hamada
| 1977. | Gravicalymene yamakoshii Kobayashi & Hamada Paratype Kobayashi, T. & Hamada, T. 1977 p. 127, pl. 11, fig. 12 |
| Condition: | Present |
| Taxonomy: | Arthropoda: |
| Geologic Time: | Paleozoic: |
| Kobayashi, T. and Hamada, T., 1977: Devonian trilobites of Japan in comparison with Asian, Pacific and other faunas. Palaeontological Society of Japan, Special Papers, no. 20, pp. i–vii + 1–202, pls. 1–13. (Reference No. 0551) |
| Ichikawa, T., 1988, no. 15, p. 62. |
