# List of fossiliferous stratigraphic units in Alaska

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

## Sites

| Group or Formation | Period |
| Adams Argillite Formation | Cambrian |
| Alapah Formation | Carboniferous |
| Baird Formation | Devonian, Silurian |
| Bear Lake Formation | Neogene |
| Beaver Bay Group/Stepovak Formation | Paleogene |
| Beaver Bay Group/Tolstoi Formation | Paleogene |
| Bowser Formation | Jurassic |
| Buchia Ridge Formation | Cretaceous |
| Cantwell Formation | Cretaceous |
| Cape Deceit Formation | |
| Cascaden Ridge Formation | Devonian |
| Chapin Peak Formation | Triassic |
| Cheeneetnuk Formation | Devonian |
| Chickaloon Formation | Paleogene |
| Chignik Formation | Cretaceous |
| Chinitna Formation | Jurassic |
| Chisana Formation | Cretaceous |
| Chitistone Formation | Triassic |
| Colville Group/Prince Creek Formation | Paleogene, Cretaceous |
| Cornwallis Limestone | Triassic |
| Coronados Volcanics Formation | Devonian |
| Corwin Formation | Cretaceous |
| Cynthia Falls Sandstone | Jurassic |
| Dd Formation | Ordovician |
| Descon Formation | Silurian |
| Eagle Creek Formation | Permian |
| Eek Mountain Formation | Cretaceous |
| Eli Formation | Devonian |
| Etivluk Group/Otuk Formation | Triassic |
| Etivluk Group/Siksikpuk Formation | Permian, Carboniferous |
| Fitz Creek Siltstone | Jurassic |
| Fossil Creek Volcanics Formation | Ordovician |
| Glenn Shale | Triassic |
| Grubstake Formation | Neogene |
| Gubik Formation | |
| Halleck Formation | Permian |
| Hasen Creek Formation | Permian |
| Heceta Limestone | Silurian |
| Hillard Limestone | Cambrian |
| Holitna Formation | Triassic, Silurian |
| Hoodoo Formation | Cretaceous |
| Hound Island Volcanics Formation | Triassic |
| Ignek Formation | Cretaceous |
| Imuruk Volcanics Formation | Neogene |
| Jones Ridge Limestone | Cambrian |
| Kamishak Formation | Jurassic, Triassic |
| Kanayut Formation | Devonian |
| Karheen Formation | Devonian, Silurian, Ordovician |
| Kashevarof Formation | Silurian |
| Kennel Creek Formation | Silurian |
| Kennicott Formation | Cretaceous |
| Kialagvik Formation | Jurassic |
| Kingak Shale | Jurassic |
| Kongakut Formation | Cretaceous |
| Kugururok Formation | Devonian |
| Kukpowruk Formation | Cretaceous |
| Kuna Formation | Carboniferous |
| Kupowruk Formation | Cretaceous |
| Ladrones Formation | Carboniferous |
| Limestone Mountain Formation | Devonian |
| Lisburne Group/Alapah Limestone | Carboniferous |
| Lisburne Group/Kogruk Formation | Carboniferous |
| Lisburne Group/Upper Formation | Carboniferous |
| Lone Mountain Formation | Ordovician |
| Lower Cantwell Formation | Cretaceous |
| Matanuska Formation | Cretaceous |
| McCann Hill Formation | Devonian |
| McCann Hill Chert Formation | Devonian |
| McCarthy Formation | Triassic |
| Mount Dall Formation | Permian |
| Mount Oratia Formation | Cretaceous |
| Naknek Formation | Jurassic |
| Nanook Formation | Devonian, Ordovician |
| Nanushuk Formation | Cretaceous |
| Nanushuk Formation | Cretaceous |
| Nanushuk Group/Chandler Formation | Cretaceous |
| Nanushuk Group/Prince Creek Formation | Cretaceous |
| Narrow Cape Formation | Neogene |
| Nation River Formation | Devonian |
| Nehenta Formation | Triassic |
| Nuka Formation | Carboniferous |
| Ogilvie Formation | Devonian |
| Okipruak Formation | Cretaceous |
| Okpikruak Formation | Cretaceous |
| Orca Formation | Paleogene |
| Otuk Formation | Triassic |
| Peratrovich Formation | Carboniferous |
| Phelan Creek Formation | Permian |
| Port Clarence Limestone | Ordovician |
| Port Refugio Formation | Devonian |
| Poul Creek Formation | Paleogene |
| Prince Creek Formation | Cretaceous |
| Pybus Formation | Permian |
| Road River Formation | Silurian, Ordovician |
| Sadlerochit Formation | Permian |
| Sadlerochit Group/Ivishak Formation | Triassic |
| Sagavanirktok Formation | Neogene |
| Salmontrout Limestone | Devonian |
| Schrader Bluff Formation | Cretaceous |
| Shelikof Formation | Jurassic |
| Shublik Formation | Triassic |
| Siksikpuk Formation | Permian |
| Skajit Formation | Devonian |
| Slana Spur Formation | Permian |
| Soda Creek Formation | Devonian |
| South Bight II Formation | |
| Split Creek Formation | Paleogene |
| Staniukovich Formation | Cretaceous, Jurassic |
| Stepovak Formation | Paleogene |
| Tachilni Formation | Neogene |
| Takhandit Formation | Permian |
| Talkeetna Formation | Jurassic |
| Telsitina Formation | Ordovician |
| Telsitna Formation | Ordovician |
| Tetelna Formation | Permian |
| Tiglukpuk Formation | Jurassic |
| Tolovana Formation | Devonian |
| Tolstoi Formation | Paleogene |
| Topsy Formation | Neogene |
| Torok Formation | Cretaceous |
| Tuxedni Group/Bowser Formation | Jurassic |
| Tuxedni Group/Cynthia Falls Sandstone | Jurassic |
| Tuxedni Group/Gaikema Formation | Jurassic |
| Tuxedni Group/Red Glacier Formation | Jurassic |
| Tyonek Formation | Neogene |
| Ulungarat Formation | Devonian |
| Unalaska Formation | Neogene, Paleogene |
| Ungalikthluk Belt Formation | Cretaceous |
| Upper Naknek Formation | Jurassic |
| Wachsmuth Formation | Carboniferous |
| Wadleigh Formation | Devonian |
| Wadleigh Limestone | Devonian |
| Whirlwind Creek Group/Upper Formation | Devonian |
| Willoughby Formation | Silurian |
| Willoughby Limestone | Silurian |
| Yakataga Formation | Neogene |