The geological period from 280 million to 310 million years ago; it was characterized by a warm climate and abundance of swampy land.
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"Pennsylvanian" Quotes from Famous Books — The Railway Builders - A Chronicle of Overland Highways • Oscar D. Skelton — Atlantic Monthly, Vol. 5, No. 30, April, 1860 • Various — McGuffey's Fifth Eclectic Reader • William Holmes McGuffey |
Words linked to "Pennsylvanian" : period, geological period, American, Carboniferous period, Pennsylvanian period, Keystone Stater, Upper Carboniferous, Upper Carboniferous period, carboniferous |
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