title: List of fossiliferous stratigraphic units in Alaska
text: # 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 |
  