| Turtle Butte Formation Stratigraphic range: Paleogene | |
|---|---|
| Type | Formation |
| Location | |
| Region | South Dakota |
| Country | United States |
The Turtle Butte Formation is a geologic formation at Turtle Butte in South Dakota. [1] It preserves fossils dating back to the Paleogene period.
The Wannagan Creek site is a fossil site found just west of the South Unit of Theodore Roosevelt National Park of North Dakota, USA. The site is Paleocene in age, approximately 60 million years old. Paleontologists of the Science Museum of Minnesota have studied the site for nearly thirty years. The site is thought to represent a paleoenviroment of subtropical swampy lowland and forests. Preservation is excellent for both the flora and fauna of the site. Trace fossils of crocodilians and other vertebrates have also been discovered.
Bahndwivici is an extinct genus of lizard known from a nearly complete and articulated skeleton discovered in rocks of the Green River Formation of Wyoming, United States. The skeleton is very similar to that of the modern Chinese crocodile lizard, Shinisaurus.
Afairiguana avius is an extinct iguanid lizard known from a nearly complete and articulated skeleton discovered in rocks of the Early Eocene-aged Green River Formation of Wyoming, United States. As of the initial description, the skeleton represents the oldest complete iguanian from the Western Hemisphere, and is the oldest representative of the extant iguanid family of anoles, Polychrotidae.
The Harrison Formation is a geologic group in South Dakota and Nebraska. It preserves fossils from the Miocene.
The Minnelusa Formation is a geologic formation in South Dakota. It preserves fossils dating back to the Carboniferous period.
The Ash Hollow Formation of the Ogallala Group is a geological formation found in Nebraska and South Dakota. It preserves fossils dating back to the Neogene period. It was named after Ash Hollow, Nebraska and can be seen in Ash Hollow State Historical Park.
The Batesland Formation is a geologic formation in South Dakota. It preserves fossils dating back to the Neogene period.
The Rosebud Formation is a geologic formation in South Dakota. It preserves fossils dating back to the Neogene period.
The Thin Elk Formation is a geologic formation in South Dakota. It preserves fossils dating back to the Neogene period.
The Whitewood Limestone is a geologic formation in South Dakota. It preserves fossils dating back to the Ordovician period.
The Monroe Creek Formation is a geologic formation in South Dakota. It preserves fossils dating back to the Paleogene period.
The Sharps Formation is a geologic formation in South Dakota. It preserves fossils dating back to the Paleogene period.
The Slim Buttes Formation is a geologic formation in South Dakota. It preserves fossils dating back to the Paleogene period.
The Rosebud Beds is a geologic formation in South Dakota. It preserves fossils.
The Fort Randall Formation is a geologic formation in South Dakota, United States. It preserves fossils dating back to the Neogene 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 Deer Butte Formation is a geologic formation in Oregon. It preserves fossils dating back to the Neogene period.
The Mazantic Shale is a geologic formation in Chiapas, Mexico. It was deposited during the Early Miocene (Aquitanian). The formation comprises dark gray shales that were deposited in a marine environment. It preserves fossils, such as the turtle Allaeochelys liliae. Amber as been recovered from it.
Turtle Butte is a summit in Tripp County, South Dakota, in the United States. With an elevation of 2,343 feet (714 m), Turtle Butte is the 456th highest summit in the state of South Dakota.
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