| Dinwoody Formation | |
|---|---|
| Stratigraphic range: Induan, ~ | |
 | |
| Type | Geological formation |
| Lithology | |
| Primary | Shale, limestone |
| Location | |
| Region | Idaho, Montana, Utah, Wyoming |
| Country |  United States |
  Dinwoody Formation (the United States) | |
The Dinwoody Formation is a geologic formation in the western United States (Idaho, Montana, Utah, Wyoming). It preserves fossils dating back to the Triassic period (Induan stage). [1]
Ceratodus is an extinct genus of lungfish. It has been described as a "catch all", and a "form genus" used to refer to the remains of a variety of lungfish belonging to the extinct family Ceratodontidae. Fossil evidence dates back to the Early Triassic. A wide range of fossil species from different time periods have been found around the world in places such as the United States, Argentina, Greenland, England, Germany, Egypt, Madagascar, China, and Australia. Ceratodus is believed to have become extinct sometime around the beginning of the Eocene Epoch.
Batrachosuchus is a genus of temnospondyl that existed from the Early to Middle Triassic of southern Africa and the Blina Shale of Australia.
Toxolophosaurus was a sphenodont which lived in North America during the Early Cretaceous.
The Amsden Formation is a geologic formation in Montana. It preserves fossils dating back to the Carboniferous period.
The Tullock Formation is a geologic formation in Montana. It preserves fossils dating back to the Paleogene period.
The Park City Formation is a geologic formation in Montana and Utah. It preserves fossils dating back to the Permian period.
The Thaynes Formation is a geologic formation in Montana and Idaho, United States. It was recently elevated to group status, as the Thaynes Group.
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 Jelm Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Triassic period.
The Woodside Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Triassic period.
The Martin Bridge Formation is a geologic formation in Idaho. It preserves fossils dating back to the Triassic period.
The Virgin Formation is a geologic formation in Utah. It preserves fossils dating back to the Triassic period.
The Thaynes Group, Thaynes Formation in older literature, is a geologic group in eastern Idaho, western Wyoming, Utah and eastern Nevada. It includes the Sinbad Formation, Virgin Formation and Shnabkaib Formation. The Thaynes Group is of marine origin. Its formations are interbedded with layers of the non-marine Moenkopi Group.
The Osobb Formation is a geologic formation in Nevada. It preserves fossils dating back to the Triassic period.
The Prida Formation is a geologic formation in Nevada. It preserves fossils dating back to the Triassic period.
The Grantsville Formation is a geologic formation in Nevada. It preserves fossils dating back to the Triassic period.
The Luning Formation is a geologic formation in Nevada. It preserves fossils dating back to the Triassic period.
The Hurwal Formation is a geologic formation in Oregon. It preserves fossils dating back to the Triassic period.
The Aksala Formation is a geologic formation in Yukon. It preserves fossils dating back to the Triassic period.
The Spray River Group is a stratigraphic unit of Triassic age. It is present on the western edge of the Western Canada Sedimentary Basin in the foothills and Rocky Mountains of western Alberta. It was originally described as the Spray River Formation by E.M. Kindle in 1924 and was later raised to group status. Its type section is located in the Spray River gorge at the southern end of Sulphur Mountain.
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