Geisonocerella nakazatoensis Niko
| 1989. | Geisonocerella nakazatoensis Niko Holotype Niko, S. 1989c p. 291, fig. 1-1–4 |
| Condition: | Present |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Paleozoic: |
| Niko, S., 1989c: A new Devonian cephalopod from the Nakazato formation of the southern Kitakami mountains. Transactions and Proceedings of the Palaeontological Society of Japan. New Series, no. 156, pp. 291–295. (Reference No. 0669) |
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| Ichikawa, T., 1995, no. 33, p. 38. |
