Subprionocyclus neptuni (Geinitz)
| 1993. | Subprionocyclus neptuni (Geinitz) Tanabe, K. 1993 p. 348 |
| Condition: | Present |
| Taxonomy: | Mollusca: Cephalopoda: |
| Geologic Time: | Mesozoic: |
| Tanabe, K., 1993: Variability and mode of evolution of the middle Cretaceous ammonite Subprionocyclus (Ammonitina: Collignoniceratidae) from Japan. Geobios, no. 15, pp. 347–357, pl. 1. (Reference No. 0695) |
| Ichikawa, T., 1995, no. 33, p. 52. |
