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The Interior Plains are highlighted in red. The Interior Plains is a vast physiographic region that spreads across the Laurentian craton of central North America, extending along the east flank of the Rocky Mountains from the Gulf Coast region to the Arctic Beaufort Sea.
The map of North America with the Western Interior Seaway during the Campanian. The Western Interior Seaway (also called the Cretaceous Seaway, the Niobraran Sea, the North American Inland Sea, or the Western Interior Sea) was a large inland sea that split the continent of North America into two landmasses for 34 million years.
Stumickosúcks of the Kainai. George Catlin, 1832 Comanches capturing wild horses with lassos, approximately July 16, 1834 Spotted Tail of the Lakota Sioux. Plains Indians or Indigenous peoples of the Great Plains and Canadian Prairies are the Native American tribes and First Nation band governments who have historically lived on the Interior Plains (the Great Plains and Canadian Prairies) of ...
The Plano cultures originated in the plains, but extended far beyond, from the Atlantic coast to modern-day British Columbia and as far north as the Northwest Territories. [ 4 ] [ 5 ] "Early Plano culture occurs south of the North Saskatchewan River in Saskatchewan and in the foothills of the Rocky Mountains north to the Peace River Valley of ...
During much of the Mesozoic Era, the North American continental interior was mostly well above sea level, with two notable exceptions. During part of the Jurassic (208-144 million years ago), rising seas flooded the low-lying areas of the continent. Much of the Interior Plains eventually lay submerged beneath the shallow Sundance Sea. [16]
The term "Great Plains" is used in the United States to describe a sub-section of the even more vast Interior Plains physiographic division, which covers much of the interior of North America. It also has currency as a region of human geography , referring to the Plains Indians or the Plains states .
Areas of Cenozoic North America that were covered by seawater tended to be areas near the modern coasts. [135] The Cannonball Sea near Minot, North Dakota was the last of the North American interior. [136] Cenozoic marine invertebrates are best known from deposits near the coasts and tend to resemble modern forms.
A Northwest Coast longhouse at the Museum of Anthropology at the University of British Columbia Interior of a Salish Longhouse, British Columbia, 1864. Watercolour by Edward M. Richardson (1810–1874). The indigenous peoples of the Pacific Northwest of North America also built a form of longhouse. Theirs were built with logs or split-log frame ...