List of fossiliferous stratigraphic units in Idaho

Group or Formation	Period	Notes
American Falls Lake Bed E Formation
Arco Hills Formation	Carboniferous
Beaverdam Formation	Neogene
Black Mesa Gravel Formation
Bruneau Formation	Pliocene-Pleistocene
Chalk Hills Formation	Neogene
Challis Volcanics Formation	Paleogene
Clarkia Formation	Neogene
Coon Hollow Formation	Jurassic
Dinwoody Formation	Triassic
Elkhead Limestone	Cambrian
Garden City Formation	Ordovician
Glenns Ferry Formation	Pliocene
Hole Formation	Neogene
Idavada Volcanics Formation	Neogene
Imnaha Basalt Formation	Neogene
Jefferson Formation	Devonian
Lakeview Formation	Cambrian
Langston Formation	Cambrian
Latah Formation	Neogene
Lead Bell Shale (Spence Shale) Formation	Cambrian
Little Flat Formation	Carboniferous
Lodgepole Formation	Carboniferous
Lodgepole Limestone	Carboniferous
Martin Bridge Formation	Triassic
McGowan Creek Formation	Carboniferous
Meade Peak Formation	Permian
Middle Canyon Formation	Carboniferous
Monroe Canyon Formation	Carboniferous
Muldoon Canyon Formation	Carboniferous
Park City Formation	Permian
Peterson Creek Beds Formation
Phi Kappa Formation	Silurian, Ordovician
Phosphoria Formation	Permian
Poison Creek Formation	Neogene
Railroad Canyon Beds Formation	Neogene
Rennie Shale	Cambrian
Sage Junction Formation	Cretaceous
Salmon City Formation	Paleogene
Salt Lake Formation	Miocene-Pliocene
Saturday Mountain Formation	Ordovician
Seven Devils Group/Martin Bridge Formation	Triassic
Snaky Canyon Formation	Permian
St. Charles Formation	Cambrian
Starlight Formation	Neogene
Surrett Canyon Formation	Carboniferous
Thaynes Formation	Triassic
Thaynes Formation	Triassic
Thaynes Formation	Triassic
Thaynes Group/Thaynes Formation	Triassic
Trail Canyon Formation	Permian
Twin Creek Formation	Jurassic
Ute Formation	Cambrian
Valmy Group/Phi Kappa Formation	Ordovician
Wayan Formation	Cretaceous
White Knob Formation	Permian
Woodside Formation	Triassic

See also

• Paleontology in Idaho