LocNo: 4260Lower Permian
| Country: |
USA
|
| Province: |
Alaska
|
| Locality: |
Black River N bank
|
| Layer: | Lower Permian |
| Lower Boundary: |
Gzhelian--Asselian [C--P], 299 million years
|
| Upper Boundary: |
Asselian--Sakmarian [ASS--SAK], 294.6 million years
|
| Georeference: |