Pentacrinus ariakensis Yokoyama
| 1957. | Pentacrinus ariakensis Yokoyama Syntype Makiyama, J. 1957 pl. 1, fig. 6 |
| 1911. | Pentacrinus ariakensis Yokoyama Syntype Yokoyama, M. 1911b p. 5, pl. 1, fig. 6 |
| Condition: | Missing |
| Taxonomy: | Echinodermata: |
| Geologic Time: | Cenozoic: |
| Makiyama, J., 1957: Matajiro Yokoyama's Tertiary fossils from various localities in Japan. Part 1. Palaeontological Society of Japan, Special Papers, no. 3, pp. 1–4, pls. 1–24. (Reference No. 0367) |
| Yokoyama, M., 1911b: Some Tertiary fossils from the Miike coal-field. Journal of the College of Science, Imperial University of Tokyo, vol. 27, art. 20, pp. 1–16, pls. 1–3. (Reference No. 0461) |
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| Ichikawa, T., 1983, no. 9, p. 38. |
| Ichikawa, T., 1983, no. 9, p. 250. |
