Productus sp.
| 1944. | Productus sp. Nonaka, J. 1944 p. 85, pl. 7, fig. 4 |
| Condition: | Present |
| Taxonomy: | Brachiopoda: |
| Geologic Time: | Paleozoic: |
| Nonaka, J., 1944: Some Permian brachiopods from inner Mongolia. Japanese Journal of Geology and Geography, vol. 19, nos. 1–4, pp. 83–87, pl. 7. (Reference No. 0245) |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 233. |
