Problematicum phy., cla., ord., fam., gen. et sp. indet.
| 1960. | Problematicum phy., cla., ord., fam., gen. et sp. indet. Kobayashi, T. 1960a p. 268, pl. 14, fig. 25 |
| Condition: | Present |
| Material: | Coprolites (?) |
| Geologic Time: | Paleozoic: |
| Kobayashi, T., 1960a: The Cambro-Ordovician formations and faunas of south Korea, Part 6. Palaeontology 5. Journal of the Faculty of Science, University of Tokyo, Section 2, vol. 12, pt. 2, pp. 217–275, pls. 12–14. (Reference No. 0160) |
 |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 159. |
