| Rock Springs Formation Stratigraphic range: Cretaceous | |
|---|---|
| Type | Formation |
| Location | |
| Region | Wyoming |
| Country | United States |
The Rock Springs Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Cretaceous period.
The Cloverly Formation is a geological formation of Early Cretaceous age that is present in parts of Montana, Wyoming, Colorado and Utah in the western United States. It was named for a post office on the eastern side of the Bighorn Basin in Wyoming by N.H. Darton in 1904. The sedimentary rocks of formation were deposited in floodplain environments and contain vertebrate fossils, including a diverse assemblage of dinosaur remains. In 1973, the Cloverly Formation Site was designated as a National Natural Landmark by the National Park Service.
The Evanston Formation is a geological formation in Wyoming whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation. The fossil formation also has the remains of prehistoric mammals from the Paleocene epoch. Mammal fossils have been found in Paleocene rocks here too.
Jeletzkytes is an extinct genus of scaphatoid ammonite from the Upper Cretaceous (Maastrichtian) of North America named and described by Riccardi, 1983. In overall form Jeletzkytes closely resembles the genus Scaphites.
Toxolophosaurus was a sphenodont from the Early Cretaceous-age Kootenai Formation of Montana.
The Tuscaloosa Formation is a geologic formation in Alabama. It preserves fossils dating back to the Cretaceous period.
The Coleraine Formation is a geologic formation in Minnesota. It preserves fossils dating back to the Cretaceous period.
The Windrow Formation is a geologic formation in Minnesota named after Windrow Bluff on Fort McCoy, Monroe County, Wisconsin. It preserves fossils dating back to the Cretaceous period.
The Edwards Group is a geologic group in Texas. It preserves fossils dating back to the Cretaceous period.
The Benton Shale is a geologic formation in Montana, Wyoming, North Dakota, South Dakota, Colorado, Kansas, and Nebraska. It preserves fossils dating to the Cretaceous Period. The term Benton Limestone has also been used to refer to the chalky portions of the strata, especially the upper beds of the strata presently classified as Greenhorn Limestone. The Benton classification is obsolete in some regions, having been replaced by the ascending sequence Graneros Shale, Greenhorn Limestone, and Carlile Shale.
The Belle Fourche Formation or Belle Fourche Shale is a fossiliferous early Late-Cretaceous geologic formation classification in Wyoming. Named for outcrops in Belle Fourche River, Wyoming, this unit name is also used in Montana, North Dakota, and South Dakota.
The Aspen Shale is a geologic formation in Wyoming. It preserves fossils dating back to the Cretaceous period.
The Meteetse Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Cretaceous period.
The Newcastle Sandstone is a geologic formation in Wyoming, United States. It preserves fossils dating back to the Cretaceous period.
The Hailey Shales Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Cretaceous period.Plesiopleurodon was found in this formation.
The North Park Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Neogene period.
The Minnekahta Formation is a geologic formation in Wyoming, United States. It preserves fossils dating back to the Permian period.
The Satanka Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Permian period.
The Jelm Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Triassic period.
The Durlston Formation is a geologic formation in England. Particularly in the Isle of Purbeck. It preserves fossils dating back to the Berriasian stage of the Lower Cretaceous.
Anatolemys is an extinct turtle genus in the family Macrobaenidae. Two species are known, both of which lived in the Late Cretaceous. Fossils were discovered in the Yalovach Formation of Tajikistan, the Kulbikin Member and Khodzhakul and Bissekty Formations of Uzbekistan and the Bostobe Formation of Kazakhstan.
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