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| Group | Formation | State |
|---|---|---|
| Fredericksburg | Devils River |
TX |
| Fredericksburg | Fort Terrett |
TX |
| Fredericksburg | Edwards |
TX |
| Fredericksburg | Comanche Peak |
TX |
| Fredericksburg | Walnut |
TX |
| group | name | author | Year | Org |
|---|---|---|---|---|
| Fred | Geologic History and Hydrogeologic setting of the Edwards-Trinity Aquifer System, West-Central Texas | Rene A. Barker, et al. | 1994 | USGS |
Map Early Cretaceous
