| Iron Springs Formation | |
|---|---|
| Stratigraphic range: Cretaceous | |
 Basal conglomerate of the Upper Cretaceous Iron Springs Formation (dark) unconformably overlying the light carbonates of the Carmel Formation (Middle Jurassic) near Gunlock, Utah. | |
| Type | Formation |
| Location | |
| Region | Utah |
| Country | United States |
The Iron Springs Formation is a geologic formation in Utah. It preserves fossils dating back to the Cretaceous period.
The Nopah Formation is a geologic formation in Utah. It preserves fossils dating back to the Cambrian period.
The Orr Formation is a geologic formation in Utah. It preserves fossils dating back to the Cambrian period.
The Pioche Formation is a geologic formation in Utah and Nevada. It preserves fossils dating back to the Cambrian period.
The Weeks Formation is a geologic formation in Utah. It preserves fossils dating back to the Cambrian period and more specifically the Guzhangian stage. Its upper part has yielded a diverse fauna dominated by trilobites and brachiopods, but also comprising various soft-bodied organisms, such as Falcatamacaris. As such, it is regarded as a Konservat-Lagerstätte.
The Chisholm Formation is a geologic formation in Utah. It preserves fossils dating back to the Cambrian period.
The Dunderberg Shale is a geologic formation in Nevada and Utah.
The Ely Limestone is a geologic formation in Nevada and Utah. It preserves fossils dating back to the Carboniferous period.
The Hermosa Group is a group of geologic formations in Utah and Colorado. It preserves fossils dating back to the Carboniferous period.
The Honaker Trail Formation is a geologic formation in Utah. It preserves fossils dating back to the Carboniferous period.
The Page Sandstone is a geologic formation in Utah. It preserves fossils dating back to the Jurassic period.
The Stump Formation is a geologic formation in Utah and Wyoming. It preserves fossils dating back to the Jurassic period.
The Swan Peak Formation is a geologic formation in Utah. It preserves fossils dating back to the Ordovician period.
The Kanosh Shale is a geologic formation in Utah. It preserves fossils dating back to the Ordovician period.
The Lehman Formation is a geologic formation in Utah. It preserves fossils dating back to the Ordovician period.
The Fillmore Limestone is a geologic formation in Utah. It preserves fossils dating back to the Ordovician period.
The Gerster Formation is a geologic formation in Utah. It preserves fossils dating back to the Permian period.
The Plympton Formation is a geologic formation in Utah. It preserves fossils dating back to the Permian period.
The Evacuation Creek Formation is a geologic formation in Utah, United States. It preserves fossils dating back to the Paleogene period.
The Flagstaff Formation is a geologic formation in Utah. It preserves fossils dating back to the Paleogene period.
The Kanosh Formation is a geologic formation in Utah and Nevada. It preserves fossils dating back to the Middle Ordovician period.
  | This article about a specific stratigraphic formation in Utah is a stub. You can help Wikipedia by expanding it. |
 | This article related to the Cretaceous period is a stub. You can help Wikipedia by expanding it. |
