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The Fox Hills Formation is a Cretaceous geologic formation in the northwestern Great Plains of North America. It is present from Alberta on the north to Colorado in the south.
The Oriskany Sandstone is a Middle Devonian age unit of sedimentary rock found in eastern North America. The type locality of the unit is located at Oriskany Falls in New York. The Oriskany Sandstone extends throughout much of the Appalachian Basin.
The Washington Formation is a coal, sandstone, and limestone geologic formation in West Virginia. It preserves fossils dating back to the Permian period.
The Linton Formation is a geologic formation in Indiana. It is the lower formation in the Carbondale Group, and includes six named members, "which, in ascending order, are the Seelyville Coal, Coxville Sandstone, Colchester Coal, Mecca Quarry Shale, Velpen Limestone, and Survant Coal Members, and unnamed units of sandstone, shale, and clay".
The Osgood Formation, also known as the Osgood Shale is a geologic formation in Indiana, Kentucky, and Ohio. It preserves fossils dating back to the Silurian period.
The Conasauga Formation is a geologic formation in Georgia. It preserves fossils dating back to the Cambrian period.
The Viola Formation is a geologic formation in Oklahoma. It preserves fossils dating back to the Ordovician period.
The Broken Skull Formation is a geologic formation in Quebec. It preserves fossils dating back to the Ordovician period.
The Illtyd Formation is an up to 1000-m thick geologic formation in Yukon. It preserves fossils dating back to the Dyerian subdivision of the Cambrian period, which spans the Stage 3 / Stage 4 boundary; it's considered to belong to the mid-upper Bonnia-Olenellus trilobite Zone. Top of the unit corresponds, more or less, to the top of Stage 4. These fossils include Lower Cambrian trilobites'.
The Ettrain Formation is a geologic formation in Yukon. It preserves fossils dating back to the Carboniferous period.
The Fifteenmile Formation is a geologic formation in Yukon. It preserves fossils dating back to the Tonian period.
The North Branch Formation is a geologic formation in Yukon. It preserves fossils dating back to the Cretaceous period.
The Prongs Creek Formation is a geologic formation in Yukon. It preserves fossils dating back to the Devonian period.
The Royal Creek Formation is a geologic formation in Yukon. It preserves fossils dating back to the Devonian period.
The Goz Siltstone Formation is a geologic formation in Yukon. It preserves fossils dating back to the Ediacaran period.
The Husky Formation is a fossiliferous stratigraphic geological formation located in the Aklavik Range, in the District of Mackenzie, Yukon.
The Laberge Formation is a geologic formation in Yukon. It preserves fossils dating back to the Jurassic period.
The Rabbitkettle Formation is a geologic formation in the Yukon, comprising thin bedded silty and occasionally siliciclastic limestones deposited in deep waters. It preserves fossils dating back to the Ordovician period.
The Jungle Creek Formation is a geologic formation in Yukon. It preserves fossils dating back to the Permian period.
The Aksala Formation is a geologic formation in Yukon. It preserves fossils dating back to the Triassic period.
References
- ↑ "Geologic Unit: Kushtaka". National Geologic Map Database. U.S. Department of the Interior & U.S. Geological Survey. Retrieved 9 February 2022.
- ↑ "Fossilworks: Gateway to the Paleobiology Database" . Retrieved 17 December 2021.
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