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The Carboniferous (/ ˌ k ɑːr b ə ˈ n ɪ f ər ə s / KAR-bə-NIF-ər-əs) [6] is a geologic period and system of the Paleozoic era that spans 60 million years, from the end of the Devonian Period 358.86 Ma (million years ago) to the beginning of the Permian Period, 298.9 Ma.
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.
Humans crossed over this bridge and started becoming abundant in North America between 11,000 and 12,000 years ago. [149] Despite withstanding the fluctuating climate and concomitant advance and retreat of glaciers, around 10,000 years ago around 32 genera of large mammals suddenly became extinct. [ 150 ]
7.1.5 Carboniferous Period. 7.1.6 Permian ... to have been some 4,600 million years ago) ... retreat of inland seas completes the emergence of North America; ...
The Alleghanian orogeny occurred approximately 325 million to 260 million years ago [1] over at least five deformation events [2] in the Carboniferous to Permian period. The orogeny was caused by Africa's collision with North America.
North America Mazatzal orogeny: 1.67 1.65 North America Picuris orogeny: 1.43 1.30 North America Grenville orogeny: 1.25 .98 North America Caledonian orogeny East Greenland Orogen.72 .42 North America Appalachian orogeny.48 North America Taconic orogeny.44 North America Acadian orogeny.37 North America Alleghanian orogeny.35 North America ...
This sea-level drop and the associated unconformity in North America separate the Mississippian Period from the Pennsylvanian period. [42] The Carboniferous was a time of active mountain building, as the supercontinent Pangea came together. The southern continents remained tied together in the supercontinent Gondwana, which collided with North ...
Carboniferous North America: geologic formations of the Carboniferous Period in Paleozoic Era North America See also the preceding Category:Devonian North America and the succeeding Category:Permian North America