Laganum decagonalis Lesson
| 1906. | Laganum decagonalis Lesson |
| Condition: | Missing |
| Taxonomy: | Echinodermata: |
| Geologic Time: | Cenozoic: |
| Tokunaga, S., 1906: Fossils from the environs of Tokyo. Journal of the College of Science, Imperial University of Tokyo, vol. 21, art. 2, pp. 1–96, pls. 1–6. (Reference No. 0443) |
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| Ichikawa, T., 1983, no. 9, p. 231. |
