Subprionocyclus neptuni (Geinitz)
| 1987. | Subprionocyclus neptuni (Geinitz) Tanabe, K. & Shigeta, Y. 1987 p. 166, table 1 |
| Condition: | Present |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Mesozoic: |
| Tanabe, K. and Shigeta, Y., 1987: Ontogenetic shell variation and streamlining of some Cretaceous ammonites. Transactions and Proceedings of the Palaeontological Society of Japan. New Series, no. 147, pp. 165–179. (Reference No. 0702) |
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| Ichikawa, T., 1995, no. 33, p. 55. |
