Protokionoceras fessicancellatum Kobayashi
| 1989. | Protokionoceras fessicancellatum Kobayashi Niko, S. et al. 1989 p. 64, fig. 2D,E; fig. 3A–D |
| Condition: | Present |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Paleozoic: |
| Niko, S., Hamada, T. and Yasui, T., 1989: Silurian Orthocerataceae (Mollusca: Cephalopoda) from the Yokokurayama formation, Kurosegawa terrane. Transactions and Proceedings of the Palaeontological Society of Japan. New Series, no. 154, pp. 59–67. (Reference No. 0677) |
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| Ichikawa, T., 1995, no. 33, p. 41. |
