Parapachydiscus yezoensis Yokoyama
| 1939. | Parapachydiscus yezoensis Yokoyama Kurosawa, M. 1939 p. 62, fig. 27 |
| 1934. | Parapachydiscus yezoensis Yokoyama Kawada, M. in Kawasaki, M. 1934 pl. 12, fig. 26 |
| Condition: | Missing |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Mesozoic: |
| Kawada, M. in Kawasaki, M., 1934: Report of the Naibuchi coal field. Karafuto [Sakhalin] Coal Field Geological Report, no. 1, pp. 1–64, pls. 1–12. Karafuto-cho. (in Japanese) (Reference No. 0066) |
| Kurosawa, M., 1939: Cretaceous fossils from south Sakhalin. Research report of natural monuments, pp. 1–80. Karafuto-cho. (in Japanese) (Reference No. 0574) |
| Ichikawa, T., 1988, no. 15, p. 92. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 55. |
