| 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 | |
|
