| Citation | Utinomi, H., 1960 Echinoids from Hokkaido and the neighbouring subarctic waters. Publications of the Seto Marine Biological Laboratory 8(2):337-350. |
| Ref. | 102373 Utinomi, H., 1960 |
| Page | 116 |
| Named Used as Valid | Phyllacanthus dubius |
| Locality | |
| Distribution | Japan. |