LocNo: 3189Ruddel Shale
| Country: |
USA
|
| Province: |
Arkansas, Independence Co.
|
| Locality: |
Sulphur Rock, Howards Wells
|
| Layer: | Ruddel Shale |
| Lower Boundary: |
UAR Ruddell base, 328.2 million years
|
| Upper Boundary: |
UAR upper Ruddel--Batesville, 327.6 million years
|
| Georeference: |