| Country: |
Japan
|
| Province: |
Kitakami Massif,Southern
|
| Locality: |
Iwanosawa, Senmatsu, Fujisawa-cho
|
| Layer: | Senmatsu Fm., calcareous nodules |
| Lower Boundary: |
Anderssonoceras/Prototoceras base, 260.4 million years
|
| Upper Boundary: |
Araxoc./Konglingites--Sanyangites, 256 million years
|
| Georeference: |