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| Group | Formation | State |
|---|---|---|
Navarro |
Nacatoch |
TX |
Taylor |
Ozan |
TX |
Austin |
Austin Chalk |
TX |
| NaN | Eagle Ford/Atco |
TX |
| NaN | Eagle Ford |
TX |
Washita |
Buda |
TX |
Washita |
Del Rio |
TX |
Washita |
Georgetown |
TX |
Washita |
Segovia |
TX |
Fredericksburg |
Devils River |
TX |
Fredericksburg |
Edwards |
TX |
Fredericksburg |
Fort Terrett |
TX |
Fredericksburg |
Comanche Peak |
TX |
Fredericksburg |
Walnut |
TX |
Trinity |
Glen Rose |
TX |
Trinity |
Hensell |
TX |
Trinity |
Cow Creek |
TX |
West_Texas |
Aguja |
TX |
West_Texas |
Pen |
TX |
West_Texas |
Boquillas |
TX |
West_Texas |
Santa Elena |
TX |
| group | name | author | Year | Org |
|---|---|---|---|---|
| Area | Guidebook to the Geology of Travis County | Keith Young | 1977 | UT |
| Area | Bedrock Geology of Round Rock and Surrounding Areas, Williamson and Travis Counties, Texas | Housh, Todd | 2007 | None |
| Fred | Geologic History and Hydrogeologic setting of the Edwards-Trinity Aquifer System, West-Central Texas | Rene A. Barker, et al. | 1994 | USGS |
| Fred | Edwards Group, surface and subsurface, central Texas | Rose, Peter | 1972 | UT-BEG |
| Washita | Fauna of the Buda Limestone | Whitney, Francis | 1911 | UT |
| Washita | Mollusca of the Buda Limestone | Shattuck, George | 1903 | USGS |
| Washita | Species of Turritella from the Buda and Georgetown Limestones of Texas, University of Texas Bulletin No. 1840 | Ellisor, Alva | 1918 | UT |
Map Early Cretaceous
Map Late Cretaceous
