# List of fossiliferous stratigraphic units in Texas

This article contains a list of fossil-bearing stratigraphic units in the state of Texas, U.S.

## Sites

| Group or Formation | Period |
| Admiral Formation | Permian |
| Aguja Formation | Cretaceous |
| Alacran Mountain Formation | Permian |
| Albany Group/Lueders Formation | Permian |
| Albany Group/Waggoner Ranch Formation | Permian |
| Aleman Formation | Ordovician |
| Altuda Formation | Permian |
| Anacacho Limestone | Cretaceous |
| Anahuac Formation | Paleogene |
| Annona Chalk | Cretaceous |
| Arcadia Park Shale | Cretaceous |
| Archer City Formation | Permian |
| Arroyo Formation | Permian |
| Austin Formation | Cretaceous |
| Austin Chalk | Cretaceous |
| Austin Group/Atco Formation | Cretaceous |
| Austin Group/Ector Formation | Cretaceous |
| Austin Group/Ector Chalk | Cretaceous |
| Austin Group/Gober Formation | Cretaceous |
| Austin Group/Gober Chalk | Cretaceous |
| Austin Group/Pflugerville Formation | Cretaceous |
| Austin Group/Roxton Formation | Cretaceous |
| Banta Shut Formation | Neogene |
| Barnett Formation | Carboniferous |
| Barnett Shale | Carboniferous |
| Bead Mountain Formation | Permian |
| Beaumont Formation | Pleistocene |
| Bell Canyon Formation | Permian |
| Belle Plains Formation | Permian |
| Bend Group/Smithwick Formation | Carboniferous |
| Benevides Formation | Cretaceous |
| Bishop Cap Formation | Carboniferous |
| Black Peaks Formation | Paleogene |
| Blaine Formation | Permian |
| Blanco Formation | United States |
| Blossom Sand | Cretaceous |
| Bone Spring Formation | Permian |
| Bone Spring Limestone | Permian |
| Boquillas Formation | Cretaceous |
| Brad Formation | Carboniferous |
| Bridwell Formation | Neogene |
| Briggs Formation | Permian |
| Brushy Canyon Formation | Permian |
| Buda Limestone | Cretaceous |
| Caballos Novaculite | Late Devonian to Carboniferous (Mississippian) |
| Caddo Creek Formation | Carboniferous |
| Camp Creek Formation | Permian |
| Camp Rice Formation | United States |
| Canoe Formation | Paleogene |
| Canyon Group/Caddo Creek Formation | Carboniferous |
| Canyon Group/Graford Formation | Carboniferous |
| Canyon Group/Palo Pinto Formation | Carboniferous |
| Canyon Group/Winchell Formation | Carboniferous |
| Canyon Group/Wolf Mountain Formation | Carboniferous |
| Canyon Group/Wolf Mountain Shale | Carboniferous |
| Capitan Formation | Permian |
| Capote Mountain Tuff | Paleogene |
| Capps Formation | Carboniferous |
| Catahoula Formation | Paleogene |
| Cathedral Mountain Formation | Permian |
| Cerro Alto Limestone | Permian |
| Chaffin Formation | Carboniferous |
| Chambers Tuff | Paleogene |
| Chappel Limestone | Carboniferous |
| Cherry Canyon Formation | Permian |
| Chinle Group/Dockum Group | Triassic |
| Chinle Group/Tecovas Formation | Triassic |
| Chisos Formation | Paleogene |
| Chispa Summit Formation | Cretaceous |
| Cibolo Formation | Permian |
| Cisco Group/Bluff Creek Formation | Carboniferous |
| Cisco Group/Graham Formation | Carboniferous |
| Cisco Group/Pueblo Formation | Permian |
| Cisco Group/Putnam Formation | Permian |
| Claiborne Formation | Paleogene |
| Claiborne Group/Cook Mountain Formation | Paleogene |
| Claiborne Group/Crockett Formation | Paleogene |
| Claiborne Group/Reklaw Formation | Paleogene |
| Claiborne Group/Stone City Formation | Paleogene |
| Claiborne Group/Weches Formation | Paleogene |
| Clarendon Beds | Neogene |
| Clear Fork Formation | Permian |
| Clear Fork Group/Arroyo Formation | Permian |
| Clear Fork Group/Vale Formation | Permian |
| Clear Fork Group/Choza Formation | Permian |
| Clear Fork Group/Lueders Formation | Permian |
| Clear Fork Group/Vale Formation | Permian |
| Clyde Formation | Permian |
| Coetas Formation | Neogene |
| Coleman Junction Formation | Permian |
| Colmena Tuff | Paleogene |
| Comanche Formation | Cretaceous |
| Comanche Peak Limestone | Cretaceous |
| Comanche Group/Paw Paw Formation | Cretaceous |
| Concha Formation | Permian |
| Cook Mountain Formation | Paleogene |
| Corsicana Marl | Cretaceous |
| Cow Creek Limestone (Cow Creek Formation) | Cretaceous |
| Crockett Formation | Paleogene |
| Cutoff Formation | Permian |
| Cutter Dolomite | Ordovician |
| Del Rio Clay | Cretaceous |
| Delaho Formation | Neogene |
| Delaware Mountain Formation | Permian |
| Denton Formation | Cretaceous |
| Devil's Graveyard Formation | Paleogene |
| Devils River Limestone | Cretaceous |
| Dockum Formation | Triassic |
| Dockum Group/Camp Springs Formation | Triassic |
| Dockum Group/Colorado City Formation | Triassic |
| Dockum Group/Cooper Canyon Formation | Triassic |
| Dockum Group/Santa Rosa Sandstone | Triassic |
| Dockum Group/Tecovas Formation | Triassic |
| Dockum Group/Trujillo Formation | Triassic |
| Dog Creek Formation | Permian |
| Eagle Ford Formation | Cretaceous |
| Eagle Ford Group/Britton Formation | Cretaceous |
| Eagle Ford Shale | Cretaceous |
| Eagle Ford Group/Britton Formation | Cretaceous |
| Eagle Ford Group/Lake Waco Formation | Cretaceous |
| Eagle Ford Group/Tarrant Formation | Cretaceous |
| East Mountain Shale | Carboniferous |
| Edwards Limestone | Cretaceous |
| Edwards Group/Segovia Formation | Cretaceous |
| El Paso Formation | Ordovician |
| El Paso Group/Florida Formation | Ordovician |
| El Paso Group/McKelligon Canyon Formation | Ordovician |
| El Paso Group/Padre Formation | Ordovician |
| El Paso Group/Scenic Drive Formation | Ordovician |
| El Picacho Formation | Cretaceous |
| Ellenburger Group | Ordovician |
| Ellenburger Group/Honeycut Formation | Ordovician |
| Ellenburger Group/Tanyard Formation | Ordovician |
| Escondido Formation | Cretaceous |
| Fayette Sandstone | Paleogene |
| Fleming Formation | Neogene |
| Fort Hancock Formation | Pleistocene |
| Fort Peña Formation | Ordovician |
| Fort Worth Limestone | Cretaceous |
| Fredericksburg Group/Comanche Peak Limestone | Cretaceous |
| Fredericksburg Group/Edwards Limestone | Cretaceous |
| Fredericksburg Group/Goodland Formation | Cretaceous |
| Fredericksburg Group/Stuart City Formation | Cretaceous |
| Fredericksburg Group/Walnut Formation | Cretaceous |
| Fredericksburg Group/Glen Rose Limestone | Cretaceous |
| Fredericksburg Group/Paluxy Formation | Cretaceous |
| Gaptank Formation | Carboniferous |
| Glen Rose Formation | Cretaceous |
| Goliad Formation | Neogene |
| Goodland Limestone | Cretaceous |
| Goodnight Beds | Neogene |
| Gorman Formation | Ordovician |
| Graford Formation | Carboniferous |
| Graham Formation | Carboniferous |
| Graham Group/Gunsight Formation | United States |
| Graham Group/Jacksboro Limestone | Carboniferous |
| Graham Group/Wayland Formation | United States |
| Grayson Formation | Cretaceous |
| Grayson Marl | Cretaceous |
| Gulf Group/Woodbine Formation | Cretaceous |
| Hammett Formation | Cretaceous |
| Hammett Shale | Cretaceous |
| Hannold Hill Formation | Paleogene |
| Harpersville Formation | Carboniferous |
| Helms Formation | Carboniferous |
| Hess Formation | Permian |
| Hogeye Tuff | Paleogene |
| Honeycut Formation | Ordovician |
| Houy Formation | Devonian to Carboniferous (Mississippian) |
| Hueco Formation | Permian |
| Hueco Canyon Formation | Permian |
| Jackson Formation | Paleogene |
| Jackson Group/Wellborn Formation | Paleogene |
| Javelina Formation | Cretaceous |
| Kamp Ranch Limestone | Cretaceous |
| Kemp Clay | Cretaceous |
| Keys Valley Marl Member | Cretaceous |
| Kiamichi Shale (Kiamichi Formation) | Cretaceous |
| Kincaid Formation | Paleogene |
| Lake Waco Formation | Cretaceous |
| Laredo Formation | Paleogene |
| Lazy Bend Formation | Carboniferous |
| Lenox Hills Formation | Permian |
| Lone Camp Group/East Mountain Formation | Carboniferous |
| Love Formation | United States |
| Lueders Formation | Permian |
| Magdalen Limestone | Carboniferous |
| Magdalena Formation | Carboniferous to Permian (?) |
| Main Street Limestone | Cretaceous |
| Malone Formation | Late Jurassic |
| Mancos Shale | Cretaceous |
| Marathon Formation | Ordovician |
| Marble Falls Formation | Carboniferous |
| Midway Formation | Paleogene |
| Midway Group/Anacacho Limestone | Cretaceous |
| Midway Group/Kincaid Formation | Paleogene |
| Midway Group/Shark River Formation | Paleogene |
| Midway Group/Wills Point Formation | Paleogene |
| Millsap Lake Group/Lazy Bend Formation | Carboniferous |
| Mineral Wells Formation | Carboniferous |
| Mingus Formation | Carboniferous |
| Montoya Group | Ordovician |
| Montoya Group/Aleman Formation | Ordovician |
| Montoya Group/Cutter Formation | Ordovician |
| Montoya Group/Second Value Formation | Ordovician |
| Moore Hollow Group/Wilberns Formation | Cambrian |
| Moran Formation | Permian |
| Nacatoch Sand | Cretaceous |
| Navarro Formation | Cretaceous |
| Navarro Group/Kemp Clay | Cretaceous |
| Navarro Group/Neylandville Marl | Cretaceous |
| Neal Ranch Formation | Early Permian |
| Neylandville Marl | Cretaceous |
| Oakville Formation | Neogene |
| Obregon Formation | Carboniferous |
| Ogallala Formation | Neogene |
| Ojinaga Formation | Cretaceous |
| Ozan Formation | Cretaceous |
| Paluxy Formation | Cretaceous |
| Pease River Group/San Angelo Formation | Permian |
| Pease River Group/San Angelo Group/Blaine Formation | Permian |
| Pecan Gap Chalk | Cretaceous |
| Pen Formation | Cretaceous |
| Pepper Shale | Cretaceous |
| Pillar Bluff Limestone | Devonian |
| Pruett Formation | Paleogene |
| Pueblo Formation | Carboniferous |
| Putnam Formation | Permian |
| Quartermaster Formation | Permian |
| Rawls Formation | Neogene |
| Reklaw Formation | Paleogene |
| Riley Formation | Cambrian |
| Rita Blanca Formation | Pleistocene |
| Road Canyon Formation | Permian |
| Ross Mine Formation | Permian |
| Rustler Formation | Permian |
| Sabinetown Bluff Formation | Paleogene |
| Salesville Formation | Carboniferous |
| San Andres Formation | Permian |
| San Carlos Formation | Cretaceous |
| Second Value Dolomite | Ordovician |
| Sedwick Formation | Permian |
| Seguin Formation | Paleogene |
| Selman Formation | Paleogene |
| Seymour Formation | Pleistocene |
| Shuler Formation | Late Jurassic |
| Skinner Mountain Formation | Permian |
| Skinner Ranch Formation | Permian |
| Sligo Formation | Cretaceous |
| Smithwick Formation | Carboniferous |
| Starcke Limestone | Silurian |
| Stone City Formation | Paleogene |
| Strawn Formation | Carboniferous |
| Strawn Group/Grindstone Formation | Carboniferous |
| Strawn Group/Millsap Lake Formation | Carboniferous |
| Sullivan Peak Formation | Permian |
| Tahoka Formation | Pleistocene |
| Talpa Formation | Permian |
| Tanyard Formation | Ordovician |
| Taylor Marl | Cretaceous |
| Taylor Group/Sprinkle Formation | Cretaceous |
| Taylor Group/Wolfe City Formation | Cretaceous |
| Taylor Group/Wolfe City Group/Sprinkle Formation | Cretaceous |
| Tecovas Formation | Triassic |
| Tesnus Formation | Carboniferous |
| Thrifty Formation | Carboniferous |
| Torcer Formation | Cretaceous |
| Tornillo Formation | Paleogene, Cretaceous |
| Tornillo Group/Javelina Formation | Cretaceous |
| Travis Peak Formation | Cretaceous |
| Trinity Formation | Cretaceous |
| Trinity Group/Antlers Formation | Cretaceous |
| Trinity Group/Bluff Mesa Formation | Cretaceous |
| Trinity Group/Cuchillo Formation | Cretaceous |
| Trinity Group/Glen Rose Formation | Cretaceous |
| Trinity Group/Glen Rose Group/Paluxy Formation | Cretaceous |
| Trinity Group/Hensel Sand | Cretaceous |
| Trinity Group/Paluxy Formation | Cretaceous |
| Trinity Group/Twin Mountains Formation | Cretaceous |
| Tule Formation | Pleistocene |
| Twin Mountains Formation | Cretaceous |
| Vale Formation | Permian |
| Valera Shale | Permian |
| Vidrio Formation | Permian |
| Vieja Formation | Paleogene |
| Waggoner Ranch Formation | Permian |
| Waldrip Formation | Carboniferous |
| Walnut Formation | Cretaceous |
| Washita Formation | Cretaceous |
| Washita Group/Del Rio Formation | Cretaceous |
| Washita Group/Denison Formation | Cretaceous |
| Washita Group/Denton Formation | Cretaceous |
| Washita Group/Duck Creek Formation | Cretaceous |
| Washita Group/Fort Worth Formation | Cretaceous |
| Washita Group/Grayson Marl | Cretaceous |
| Washita Group/Main Street Limestone | Cretaceous |
| Washita Group/Pawpaw Formation | Cretaceous |
| Washita Group/Weno Limestone | Cretaceous |
| Weches Formation | Paleogene |
| Weno Formation | Cretaceous |
| Whitehorse Formation | Permian |
| Wichita Formation | Permian |
| Wichita Group/Admiral Formation | Permian |
| Wichita Group/Archer City Formation | Permian |
| Wichita Group/Belle Plains Formation | Permian |
| Wichita Group/Clyde Formation | Permian |
| Wichita Group/Lueders Formation | Permian |
| Wichita Group/Moran Formation | Permian |
| Wichita Group/Nocona Formation | Permian |
| Wichita Group/Petrolia Formation | Permian |
| Wichita Group/Waggoner Ranch Formation | Permian |
| Wichita Group/Putnam Formation | Permian |
| Wichita Group/Waggoner Ranch Formation | Permian |
| Wilberns Formation | Cambrian |
| Wilcox Group/Rockdale Formation | Paleogene |
| Wills Point Formation | Paleogene |
| Winchell Formation | Carboniferous |
| Wolf Mountain Formation | Carboniferous |
| Wolfe City Formation | Cretaceous |
| Woodbine Formation | Cretaceous |
| Woods Hollow Formation | Middle Ordovician |
| Word Formation | Permian |
| Yegua Formation | Paleogene |
| Yucca Formation | Cretaceous |