| Specimen state | |
|---|---|
| Common name | Gastropod |
| Scientific name | ''Spirostoma'' sp. |
| Order | |
| Family | |
| Country | Japan |
| Prefecture, State | Kumamoto |
| City | Kamimasiki,Mifune |
| Group | Mifune G. |
| Formation | Upper F. |
| Era | Mesozoic |
| Period | Cretaceous |
| Epoch | Late |
| Specimen state | |
|---|---|
| Common name | Gastropod |
| Scientific name | ''Spirostoma'' sp. |
| Order | |
| Family | |
| Country | Japan |
| Prefecture, State | Kumamoto |
| City | Kamimasiki,Mifune |
| Group | Mifune G. |
| Formation | Upper F. |
| Era | Mesozoic |
| Period | Cretaceous |
| Epoch | Late |