Laganum decagonalis (Less)
| 1903. | Laganum decagonalis (Less) |
| Condition: | Missing |
| Taxonomy: | Echinodermata: |
| Geologic Time: | Cenozoic: |
| Tokunaga, S., 1903: On the fossil echinoids of Japan. Journal of the College of Science, Imperial University of Tokyo, vol. 17, art. 12, pp. 1–27, pls. 1–4. (Reference No. 0442) |
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| Ichikawa, T., 1983, no. 9, p. 221. |
