| Specimen state | |
|---|---|
| Common name | Ammonite Polyptychocerus |
| Scientific name | Polyptychocerus sp. |
| Order | |
| Family | |
| Country | Japan |
| Prefecture, State | Hokkaidou |
| City | Tomamae |
| Group | |
| Formation | |
| Era | Mesozoic |
| Period | Cretaceous |
| Epoch | Late |
| Specimen state | |
|---|---|
| Common name | Ammonite Polyptychocerus |
| Scientific name | Polyptychocerus sp. |
| Order | |
| Family | |
| Country | Japan |
| Prefecture, State | Hokkaidou |
| City | Tomamae |
| Group | |
| Formation | |
| Era | Mesozoic |
| Period | Cretaceous |
| Epoch | Late |