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The Bear Gulch Limestone is commonly considered to be part of the Heath Formation, the youngest formation in the Big Snowy Group of central Montana. [1] [14] [2] [15] Some authors instead consider the Bear Gulch Limestone to be an early member of the Tyler Formation, a patchy but widespread unit of Carboniferous limestone and terrestrial sediments.
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Rimini, (/ ˈ r ɪ m ə n aɪ /) is a ghost town in Lewis and Clark County, Montana, United States. It is one of the oldest mining districts in the state. It was established when silver lodes were discovered in 1864. Other names for the district were Lewis and Clark, Tenmile, Vaughn, Colorado, and Bear Gulch. [3] It was the site of Camp Rimini.
Aesopichthys is known from a number of specimens with the holotype, CM 48550, being a natural cast and its counterpart found southwest of Becket, Montana. The animal was originally described, along with Proceramala , in 2000 by Cécile Poplin and Richard Lund though in previous papers it was referred under the nickname "Aesopich".
Relief map of Montana. The state's topography is roughly defined by the Continental Divide, which splits much of the state into distinct eastern and western regions. [4] Most of Montana's hundred or more named mountain ranges are in the state's western half, most of which is geologically and geographically part of the northern Rocky Mountains.
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The 1865 DeLacey Map of Montana Territory does not name the Tobacco Roots. The first written reference to the mountains between the Madison and Jefferson Rivers is F.V. Hayden's 6th Annual Report of the Geological Surveys of the Territories for 1873, in which the name South Bowlder Range is mentioned, a reference to the largest river in the ...
It is known from the Serpukhovian-aged lagerstätte of the Bear Gulch Limestone of Montana, United States. It is one of the genera included in the family Gregoriidae . [ 3 ] [ 4 ]