LocNo: 7870Upper Visean
| Country: |
Russian Federation
|
| Province: |
Subpolar Urals, Komi, Betyu River
|
| Locality: |
Betyu River
|
| Layer: | Upper Visean |
| Lower Boundary: |
Beyrichoceras BZ top, 332.1 million years
|
| Upper Boundary: |
DER Go beta--gamma, granos.base [P1--P2], 328.2 million years
|
| Georeference: |