| Country: |
Germany
|
| Province: |
Rhenish Mountains
|
| Locality: |
Essen, Herkules Mine
|
| Layer: | G1 |
| Lower Boundary: |
Marsdenian--Yeadonian [MRD--YEA], 313.8 million years
|
| Upper Boundary: |
Yeadonian--Langsettian, Westph.A [YEA--, 313 million years
|
| Georeference: |
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