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Upper Carboniferous periodPennsylvanianPennsylvanian periodUpper Carboniferousgeological periodperiodCarboniferousCarboniferous period

Upper Carboniferous period

noun

1 Upper Carboniferous period

From 310 million to 280 million years ago; warm climate; swampy land.

synonyms: Pennsylvanian, Pennsylvanian period, Upper Carboniferous.

is an instance of: geological period, period.

is a part of: Carboniferous, Carboniferous period.

Find more on upper carboniferous period elsewhere: etymology - rhymes - Wikipedia.

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