LocNo: 133Fern Glen Limestone, near base
| Country: |
USA
|
| Province: |
Illinois, Monroe Co.
|
| Locality: |
Valmeyer,Dennis Hollow,road-cut 1mile e'
|
| Layer: | Fern Glen Limestone, near base |
| Lower Boundary: |
UIL Fern Glen Fm. base, 349 million years
|
| Upper Boundary: |
UIL Fern Glen Fm. top, 339 million years
|
| Georeference: |