# List of fossiliferous stratigraphic units in California

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

## Sites

| Group or Formation | Period |
| Al Rose Formation | Ordovician |
| Altamira Shale | Neogene |
| Antelope Valley Limestone | Ordovician |
| Arvison Formation | Triassic |
| Asuncion Group/Chico Formation | Cretaceous |
| Asuncion Group/Forbes Shale | Cretaceous |
| Asuncion Group/Funks Shale | Cretaceous |
| Asuncion Group/Moreno Formation | Cretaceous |
| Asuncion Group/Ragged Valley Shale | Cretaceous |
| Avawatz Formation | Neogene |
| Aztec Sandstone | Jurassic |
| Badger Flat Formation | Ordovician |
| Baird Formation | Carboniferous |
| Barrel Spring Formation | Ordovician |
| Barstow Formation | Neogene |
| Battery Formation | |
| Bautista Formation | |
| Bedrock Spring Formation | Neogene |
| Bird Spring Formation | Permian, Carboniferous |
| Bonanza King Formation | Cambrian |
| Bopesta Formation | Neogene |
| Bragdon Formation | Carboniferous |
| Branch Canyon Formation | Neogene |
| Brawley Formation | |
| Briones Formation | Neogene |
| Brock Shale | Triassic |
| Budden Canyon Formation | Cretaceous |
| Cache Formation | |
| Cajon Valley Beds Formation | Neogene |
| Caliente Formation | Neogene |
| Campito Formation | Cambrian |
| Capay Formation | Paleogene |
| Capistrano Formation | Neogene |
| Carrara Formation | Cambrian |
| Chanac Formation | Neogene |
| Chatsworth Formation | Cretaceous |
| Chico Formation | Cretaceous |
| Chico Group/Moreno Formation | Cretaceous |
| Chloropagus Formation | Neogene |
| Conglomerate Mesa Formation | Permian |
| Copper Canyon Formation | Neogene |
| Coso Formation | Neogene |
| Crowder Formation | Neogene |
| Darwin Canyon Formation | Permian |
| Debris Dam Formation | Cretaceous |
| Deep Spring Formation | Cambrian |
| Dekkas Formation | Permian |
| Delmar Formation | Paleogene |
| Diablo Formation | Neogene |
| Diligencia Formation | |
| Disaster Peak Formation | Neogene |
| Domengine Formation | Paleogene |
| Dove Spring Formation | Neogene |
| Drakes Bay Formation | Neogene |
| Ely Springs Dolomite | Ordovician |
| Etchegoin Formation | Neogene |
| Falor Formation | |
| Fernando Formation | Neogene |
| Forbes Formation | Cretaceous |
| Foreman Formation | Jurassic |
| Franciscan Formation | Jurassic |
| Freeman Silt Formation | Neogene |
| Friars Formation | Paleogene |
| Funks Formation | Cretaceous |
| Gazelle Formation | Silurian |
| Goler Formation | Paleogene |
| Goodhue Formation | Permian |
| Goodwin Formation | Ordovician |
| Great Valley Formation | Cretaceous |
| Great Valley Group/Antelope Shale | Cretaceous |
| Great Valley Group/Budden Canyon Formation | Cretaceous |
| Great Valley Group/Crack Canyon Formation | Cretaceous |
| Great Valley Group/Gravelly Flat Formation | Cretaceous |
| Great Valley Group/Lodoga Formation | Cretaceous |
| Great Valley Group/Moreno Formation | Cretaceous |
| Great Valley Group/Stony Creek Formation | Jurassic |
| Green Valley Formation | Neogene |
| Gregg Ranch Formation | Ordovician |
| Hardgrave Formation | Jurassic |
| Harkless Formation | Cambrian |
| Harold Formation | |
| Hector Formation | Neogene |
| Hidden Valley Dolomite | Devonian |
| Hinchman Formation | Jurassic |
| Hookton Formation | |
| Hornbrook Formation | Cretaceous |
| Horned Toad Formation | Neogene |
| Horseshoe Gulch Formation | Ordovician |
| Horseshoe Gulch unit Formation | Ordovician |
| Hosselkus Formation | Triassic |
| Hosselkus Limestone | Triassic |
| Hungry Valley Formation | Neogene |
| Imperial Formation | Neogene |
| Imperial Group/Deguynos Formation | Neogene |
| Jalama Formation | Cretaceous |
| Jewett Sand Formation | Neogene, Paleogene |
| Joaquin Formation | Cretaceous |
| Josephine Formation | Jurassic |
| Juncal Formation | Paleogene |
| Kangaroo Creek Formation | Devonian, Silurian, Ordovician |
| Kangaroo Ranch Formation | Ordovician |
| Kern River Formation | Neogene |
| Kern River Beds Formation | Neogene |
| Kramer Beds Formation | Neogene |
| Kreyenhagen Formation | Paleogene |
| Kreyenhagen Shale | Paleogene |
| La Habra Formation | |
| La Jolla Formation | Paleogene |
| Ladd Formation | Cretaceous |
| Ladera Sandstone | Neogene |
| Laguna Seca Formation | Paleogene, Cretaceous |
| Lake Mathews Formation | Neogene |
| Latham Shale | Cambrian |
| Livermore Gravels Formation | Neogene |
| Llajas Formation | Paleogene |
| Locatelli Formation | Paleogene |
| Lodo Formation | Paleogene |
| Lomita Marl Formation | |
| Lompico Sandstone | Neogene |
| Lower Arkose Unit Formation | Neogene |
| Manix Formation | |
| Martinez Formation | Paleogene |
| Mazourka Formation | Ordovician |
| McCloud Limestone | Permian, Carboniferous |
| Meganos Formation | Paleogene |
| Meganos C Formation | Paleogene |
| Mehrten Formation | Neogene |
| Merced Formation | Neogene |
| Merhten Formation | Neogene |
| Mint Canyon Formation | Neogene |
| Mission Valley Formation | Paleogene |
| Modello Formation | Neogene |
| Modelo Formation | Neogene |
| Modin Formation | Triassic |
| Moenkopi Formation | Triassic |
| Monola Formation | Cambrian |
| Monterey Formation | Neogene |
| Monterey Group/Claremont Shale | Neogene |
| Montezuma Formation | Pleistocene |
| Montgomery Creek Formation | Paleogene |
| Montgomery Limestone | Ordovician |
| Moraga Formation | Neogene |
| Moreno Formation | Cretaceous |
| Moreno Grande Formation | Cretaceous |
| Mormon Formation | Jurassic |
| MR Caliente Formation | Neogene |
| Mt. Eden Formation | Neogene |
| Mule Spring Limestone | Cambrian |
| Mulholland Formation | Neogene |
| Neroly Formation | Neogene |
| Niguel Formation | Neogene |
| Nosoni Formation | Permian |
| NS Caliente Formation | Neogene |
| Oclese Sand Formation | Neogene |
| Ocotillo Formation | |
| Ono Formation | Cretaceous |
| Orinda Formation | Neogene |
| Oro Loma Formation | Neogene |
| Osbourne Canyon Formation | Permian |
| Otay Formation | |
| Owens Valley Formation | Permian |
| Owens Valley Group/Santa Rosa Flat Formation | Permian |
| Pacheco Formation | Cretaceous |
| Palm Spring Formation | |
| Palos Verdes Formation | |
| Panoche Formation | Cretaceous |
| Paskenta Formation | Cretaceous |
| Paso Robles Formation | Neogene |
| Pauba Formation | |
| Payton Ranch Limestone | Silurian |
| Peace Valley Beds Formation | Neogene |
| Petaluma Formation | Neogene |
| Pico Formation | Neogene |
| Pigeon Point Formation | Cretaceous |
| Pinole Tuff Formation | Neogene |
| Pismo Formation | Neogene |
| Pit Formation | Triassic |
| Pleasants Sandstone | Cretaceous |
| Plush Ranch Formation | Neogene |
| Point Loma Formation | Cretaceous |
| Poleta Formation | Cambrian |
| Pomerado Conglomerate Formation | Paleogene |
| Potem Formation | Jurassic |
| Poway Formation | Paleogene |
| Puente Formation | Neogene |
| Puente Shale | Neogene |
| Punchbowl Formation | Neogene |
| Purisima Formation | Neogene |
| Purisimo Formation | Neogene |
| Redding Formation | Cretaceous |
| Rincon Formation | Neogene, Paleogene |
| Rio Dell Formation | |
| Riverbank Formation | |
| Robinson Formation | Permian |
| Rosario Formation | Cretaceous |
| Rosario Group/Cabrillo Formation | Cretaceous |
| Rosario Group/Point Loma Formation | Cretaceous |
| Round Mountain Silt Formation | Neogene |
| Saline Valley Formation | Cambrian |
| San Antonio Formation | |
| San Benito Gravels | |
| San Diego Formation | Neogene |
| San Emigdio Formation | Paleogene |
| San Francisquito Formation | Paleogene, Cretaceous |
| San Joaquin Formation | Neogene |
| San Lorenzo Formation | Paleogene |
| San Lorenzo Group/Pleito Formation | Paleogene |
| San Lorenzo Group/San Emigdio Formation | Paleogene |
| San Margarita Sandstone | Neogene |
| San Mateo Formation | Neogene |
| San Pablo Formation | Neogene |
| San Pedro Formation | |
| San Pedro Sand Formation | |
| San Timoteo Formation | |
| Santa Clara Formation | Neogene |
| Santa Cruz Mudstone Formation | Neogene |
| Santa Margarita Formation | Neogene |
| Santa Rosa Flat Formation | Permian |
| Santa Rosa Island Formation | |
| Santa Susana Formation | Paleogene |
| Santiago Formation | Paleogene |
| Scripps Formation | Paleogene |
| Sespe Formation | Neogene, Paleogene |
| Shasta Formation | Cretaceous |
| Sierra Blanca Limestone | Paleogene |
| Siesta Formation | Neogene |
| Silverado Formation | Paleogene |
| Sisquoc Formation | Neogene |
| Skooner Gulch Formation | Neogene |
| St. George Formation | Neogene |
| Stadium Conglomerate Formation | Paleogene |
| Sweetwater Formation | Paleogene |
| Tassajara Formation | Neogene |
| Tecopa Lake Beds Formation | |
| Tecuya Formation | |
| Tejon Formation | Paleogene |
| Temblor Formation | Neogene, Paleogene |
| Temecula Arkose Formation | |
| Thompson Formation | Jurassic |
| Tick Canyon Formation | |
| Timm's Point Formation | |
| Titus Canyon Formation | Paleogene |
| Topanga Canyon Formation | Neogene |
| Towsley Formation | Neogene |
| Tulare Formation | Neogene |
| Tuna Canyon Formation | Cretaceous |
| Turlock Lake Formation | |
| UDC Caliente Formation | Neogene |
| Union Wash Formation | Triassic |
| Unnamed Formation | Paleogene |
| Upper Caliente Formation | Neogene |
| Upper Etchegoin Formation | |
| Upper Fernando Formation | Neogene |
| Upper Mehrten Formation | Neogene |
| Valmonte Diatomite Formation | Neogene |
| Vaquero Formation | Neogene |
| Vaqueros Formation | Neogene, Paleogene |
| Vedder Sand | Paleogene |
| Volcanopelagic Succession Group/Unit 1 Formation | Jurassic |
| Volcanopelagic Succession Group/Unit 2 Formation | Jurassic |
| Volcanopelagic Succession Group/Unit 3 Formation | Jurassic |
| Waltham Formation | Cretaceous |
| Wildcat Formation | Neogene |
| Wildcat Group/Rio Dell Formation | Neogene |
| Williams Formation | Cretaceous |
| Wood Canyon Formation | Cambrian, Ediacaran |
| Zabriskie Quartzite Formation | Cambrian |