List of fossiliferous stratigraphic units in Oklahoma
# List of fossiliferous stratigraphic units in Oklahoma

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

## Sites

| Group or Formation | Period |
| - | - |
| Ada Group/Ada Formation | Carboniferous |
| Altamont Formation | Carboniferous |
| Arbuckle Group/Arbuckle Formation | Ordovician |
| Arbuckle Group/Kindblade Formation | Ordovician |
| Atoka Formation | Carboniferous |
| Baldy Hill Formation | Triassic |
| Barnsdall Formation | Carboniferous |
| Blaine Formation | Permian |
| Bloyd Formation | Carboniferous |
| Boggy Formation | Carboniferous |
| Bois d'Arc Formation | Devonian |
| Boone Formation | Carboniferous |
| Bostwick Formation | Carboniferous |
| Bromide Formation | Ordovician |
| Brownstown Formation | Cretaceous |
| Caney Formation | Carboniferous |
| Cape Formation | Ordovician |
| Carey Formation | Carboniferous |
| Chapman Ranch Formation | Ordovician |
| Cherokee Shale | Carboniferous |
| Cherryvale Formation | Carboniferous |
| Chickasha Formation | Permian |
| Clarita Formation | Silurian |
| Coffeyville Formation | Carboniferous |
| Cotter Formation | Ordovician |
| Council Grove Group/Beattie Limestone | Permian |
| Council Grove Group/Foraker Formation | Carboniferous |
| Council Grove Group/Johnson Formation | Permian |
| Council Grove Group/Red Eagle Formation | Permian |
| Council Grove Group/Roca Formation | Permian |
| Deer Creek Formation | Carboniferous |
| Deese Formation | Carboniferous |
| Deese Group/Boggy Formation | Carboniferous |
| Dennis Formation | Carboniferous |
| Dewey Formation | Carboniferous |
| Dog Creek Formation | Permian |
| Dornick Hills Group/Lake Murray Formation | Carboniferous |
| Dornick Hills Group/Golf Course Formation | Carboniferous |
| El Reno Group/Chickasha Formation | Permian |
| El Reno Group/Duncan Formation | Permian |
| El Reno Group/Flowerpot Formation | Permian |
| Enid Formation | Permian |
| Fayetteville Formation | Carboniferous |
| Fayetteville Shale | Carboniferous |
| Flowerpot Formation | Permian |
| Fort Scott Limestone | Carboniferous |
| Francis Formation | Carboniferous |
| Garber Sandstone | Permian |
| Gene Autry Formation/Gene Autry Shale | Carboniferous |
| Golf Course Formation | Carboniferous |
| Grenola Formation | Permian |
| Haragan Formation | Devonian |
| Hennessey Formation | Permian |
| Henryetta Coal Formation | Carboniferous |
| Henryhouse Formation | Silurian |
| Hertha Formation | Carboniferous |
| Hindsville Limestone | Carboniferous |
| Hogshooter Formation | Carboniferous |
| Holdenville Formation | Carboniferous |
| Hunton Formation | Devonian |
| Iola Formation | Carboniferous |
| Jefferson City Formation | Ordovician |
| Johns Valley Formation | Carboniferous |
| Keel Formation | Ordovician |
| Kindblade Formation | Ordovician |
| Krebs Group/Krebs Formation | Carboniferous |
| Krebs Group/Boggy Formation | Carboniferous |
| Krebs Group/Hartshorne Formation | Carboniferous |
| Lake Murray Formation | Carboniferous |
| Lansing Group/Barnsdall Formation | Carboniferous |
| Lansing Group/Stanton Formation | Carboniferous |
| Lansing Group/Vilas Shale | Carboniferous |
| Laverne Formation | Neogene |
| Lecompton Formation | Carboniferous |
| Leonard Series Group/Blaine Formation | Permian |
| Leonard Series Group/Dog Creek Formation | Permian |
| Lost Branch Formation | Carboniferous |
| Marmaton Group/Fort Scott Formation | Carboniferous |
| Marmaton Group/Oologah Formation | Carboniferous |
| McCully Formation | Carboniferous |
| Mesa Rica Sandstone | Cretaceous |
| Moorefield Formation | Carboniferous |
| Morrison Formation | Jurassic |
| Morrow Formation | Carboniferous |
| Morrow Group/Bloyd Formation | Carboniferous |
| Nelagoney Formation | Wildhorse |
| Nelly Bly Formation | Carboniferous |
| Neva Formation | Permian |
| Ochelata Group/Wann Formation | Carboniferous |
| Ogallala Group/Ogallala Formation | Neogene |
| Ogallala Group/Laverne Formation | Neogene |
| Ohio Shale | Devonian |
| Oil Creek Formation | Ordovician |
| Omadi Formation | Cretaceous |
| Oolagah Formation | Carboniferous |
| Oread Formation | Carboniferous |
| Ozan Formation | Cretaceous |
| Paluxy Formation | Cretaceous |
| Parajito Formation | Cretaceous |
| Pawnee Formation | Carboniferous |
| Pinetop Formation | Devonian |
| Pitkin Formation | Carboniferous |
| Red Eagle Formation | Permian |
| Redoak Hollow Formation | Carboniferous |
| Rexroad Formation | Neogene |
| Sausbee Formation | Carboniferous |
| Seminole Formation | Carboniferous |
| Simpson Group/Simpson Formation | Ordovician |
| Simpson Group/Joins Formation | Ordovician |
| Simpson Group/McLish Formation | Ordovician |
| Simpson Group/Oil Creek Formation | Ordovician |
| Simpson Group/Tulip Creek Formation | Ordovician |
| Skiatook Group/Nellie Bly Formation | Carboniferous |
| Skiatook Group/Seminole Formation | Carboniferous |
| Sloan Canyon Formation | Triassic |
| St. Joe Formation | Carboniferous |
| Summerville Formation | Jurassic |
| Sumner Group/Garber Formation | Permian |
| Sumner Group/Wellington Formation | Permian |
| Trinity Group/Antlers Formation | Cretaceous |
| Viola Formation | Ordovician |
| Wabaunsee Group/Brownville Formation | United States |
| Wabaunsee Group/Burlingame Formation | Carboniferous |
| Wabaunsee Group/Foraker Formation | Carboniferous |
| Wann Formation | Carboniferous |
| Wapanucka Formation | Carboniferous |
| Wapanucka Limestone | Carboniferous |
| Welden Limestone | Carboniferous |
| Wellington Formation | Permian |
| Wetumka Formation | Carboniferous |
| Wewoka Formation | Carboniferous |
| Wewoka Shale | Carboniferous |
| Whitehorse Formation | Permian |
| Winfield Formation | Permian |
