LocNo: 6913Shales, Marsdenian, undifferentiated
| Country: |
France
|
| Province: |
Northern France
|
| Locality: |
Sessevalle, Fosse, étage 440, à 1081 m
|
| Layer: | Shales, Marsdenian, undifferentiated |
| Lower Boundary: |
Kinderscoutian--Marsdenian [KIN--MRD], 315 million years
|
| Upper Boundary: |
GBY R2b (B.bilinguis--B.eometabilinguis), 314.6 million years
|
| Georeference: |