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Upper CarboniferousPennsylvanianPennsylvanian periodUpper Carboniferous periodgeological periodperiodCarboniferousCarboniferous period

Upper Carboniferous

noun

1 Upper Carboniferous

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

synonyms: Pennsylvanian, Pennsylvanian period, Upper Carboniferous period.

is an instance of: geological period, period.

is a part of: Carboniferous, Carboniferous period.

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