| Laberge Formation Stratigraphic range: Jurassic | |
|---|---|
| Type | Formation |
| Location | |
| Region | Yukon |
| Country | Canada |
The Laberge Formation is a geologic formation in Yukon. It preserves fossils dating back to the Jurassic period.
Megalonychidae is a group of sloths including the extinct Megalonyx. Megalonychids first appeared in the early Oligocene, about 35 million years (Ma) ago, in southern Argentina (Patagonia). There is actually one possible find dating to the Eocene, about 40 Ma ago, on Seymour Island in Antarctica. They first reached North America by island-hopping across the Central American Seaway, about 9 million years ago, prior to formation of the Isthmus of Panama about 2.7 million years ago. Some megalonychid lineages increased in size as time passed. The first species of these were small and may have been partly tree-dwelling, whereas the Pliocene species were already approximately half the size of the huge Late Pleistocene Megalonyx jeffersonii from the last ice age.
The giant pika or Wharton's pika is an extinct mammal species in the family Ochotonidae. It lived during the Pleistocene and early Holocene in northern parts of North America. Very similar forms have also been found also in Siberia.
The Ouray Formation is a geologic formation in Colorado. It preserves fossils dating back to the Devonian period.
The Farisita Formation is a geologic formation in Colorado. It preserves fossils dating back to the Paleogene period.
The Amherstburg Formation is a geologic formation in Ontario, Canada and Michigan, United States. It preserves fossils dating back to the Devonian 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 Rabbitkettle Formation is a geologic formation in Yukon, comprising thin bedded silty and occasionally siliciclastic limestones deposited in deep waters. It preserves fossils dating back to the Ordovician period.
The Kulthieth Formation is a geologic formation in Yukon. It preserves fossils dating back to the Paleogene 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.
The Miette Group is an assemblage of metamorphosed sedimentary rocks of latest Precambrian (Neoproterozoic) age. It is present in the Canadian Cordillera from the Lake Louise area of Alberta to the Yukon. The Meiette rocks include Ediacaran fossils, stromatolites, and trace fossils.
The Bois Blanc Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
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