List of fossiliferous stratigraphic units in Arizona
# List of fossiliferous stratigraphic units in Arizona

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

## Sites

| Group or Formation | Period |
| - | - |
| Amole Arkose | Cretaceous |
| Bidahochi Formation | Neogene |
| Big Sandy Formation | Neogene |
| Bisbee Group/Lowell Formation | Cretaceous |
| Bisbee Group/Mural Limestone | Cretaceous |
| Bisbee Group/Shellenberger Canyon Formation | Cretaceous |
| Bisbee Group/Turney Ranch Formation | Cretaceous |
| Black Prince Limestone | Carboniferous |
| Bright Angel Formation | Cambrian |
| Chinle Formation | Triassic |
| Chinle Group/Petrified Forest Formation | Triassic |
| Cintura Formation | Cretaceous |
| Colina Formation | Permian |
| Concha Formation | Permian |
| Dakota Formation | Cretaceous |
| Dox Formation | Neoproterozoic (stromatolite beds) |
| Earp Formation | Permian |
| Epitaph Formation | Permian |
| Escabrosa Limestone | Mississippian |
| Fort Apache Formation | Permian |
| Fort Crittenden Formation | Cretaceous |
| Frenchman Mountain Dolostone | Cambrian |
| Gardner Canyon Formation | Jurassic |
| Gila Formation | Neogene |
| Gila Conglomerate Formation | Pliocene – Pleistocene |
| Glen Canyon Group/Kayenta Formation | Jurassic |
| Glen Canyon Group/Moenave Formation | Jurassic, Triassic |
| Glen Canyon Group/Navajo Sandstone | Jurassic |
| Glen Canyon Group/Wingate Sandstone | Triassic |
| Hermit Shale | Permian, Carboniferous |
| Kaibab Limestone | Permian |
| Kayenta Formation | Jurassic |
| Mancos Shale | Cretaceous |
| Martin Formation | Devonian |
| Mesa Verde Group/Toreva Formation | Cretaceous |
| Milk Creek Formation | Neogene |
| Moenkopi Formation | Triassic |
| Molly Gibson Formation | Cretaceous |
| Morrison Formation | Jurassic |
| Mountain Springs Formation | Devonian |
| Muav Limestone | Cambrian |
| Muddy Creek Formation | Neogene |
| Mural Limestone | Cretaceous |
| Naco Formation | Pennsylvanian |
| Naco Group/Cochise Formation | Permian |
| Naco Group/Colina Formation | Permian |
| Onyx Marble Formation | Neogene |
| Paradise Formation | Carboniferous |
| Percha Formation | Devonian |
| Quiburis Formation | Neogene |
| Redwall Limestone | Mississippian |
| Snyder Hill Formation | Permian |
| St. David Formation | Pliocene - Pleistocene |
| Summerville Formation | Jurassic |
| Supai Formation | Permian, Carboniferous |
| Supai Group | Permian, Carboniferous |
| Supai Group/Watahomigi Formation | Carboniferous |
| Surprise Canyon Formation | Carboniferous |
| Toreva Formation | Cretaceous |
| Toroweap Formation | Permian |
