Specimens of eight and ten pounds weight have been taken by rod and fly fishermen from the Big Laramie river.
Bonneville was the first to cross the Rockies with wagons (1832),' and two years later Fort Laramie, near the mouth of the Laramie river, was established to control the fur trade of the Arapahoes, Cheyennes and Sioux.
For the latter reason the National Congress on the 19th of May 1846 authorized the construction at intervals along the trail of military stations for the protection of the emigrant trains, and Fort Kearny was built (1848) and Fort Laramie was purchased (1849).
CHEYENNE, the chief city and capital of Wyoming, U.S.A., and county-seat of Laramie county, on Crow Creek, about 106 m.
Flanking strata are even better exhibited in the Bighorn Mountains, the front range of northern Wyoming, crescentic in outline and convex to the northeast, like the Laramie Range, but much higher; here heavy sheets of limestone arch far up towards the range crest, and are deeply notched where consequent streams have cut down their gorges.
An extensive literature has grown up relating to these Laramie strata, for owing to the Tertiary aspect of the contained plants, geologists were slow to recognize that they could be truly contemporaneous and interbedded with others yielding Cretaceous animals.
There are sandstone deposits in Carbon county, which supplied the stone for the Capitol at Cheyenne and the state penitentiary; and from the Iron mountain quarries in Laramie county was taken the white variety used in building the Carnegie library and the Federal building in Cheyenne.
According to this catalogue, the true Laramie flora includes about 250 species, more than half of which are deciduous forest trees, herbaceous Dicotyledons, Monocotyledons and Cryptogams, all being but poorly represented.
Cheyenne was laid out by the Union Pacific Railroad (July 1867), a city government was established in August, newspapers began publication, and Laramie county was organized before the arrival of the first railway train on the 13th of November 1867.
In the central parts of North America the lacustrine plant-bearing deposits are of enormous thickness, the Dakota series being followed by marine Cretaceous strata known as the Colorado and Montana groups, and these being succeeded conformably by a thousand feet or more of lacustrine shales, sandstones and coal-seams, belonging to the Laramie series.