upper carboniferous period

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Noun upper carboniferous period has 1 sense

Pennsylvanian, Pennsylvanian period, Upper Carboniferous, Upper Carboniferous period - from 310 million to 280 million years ago; warm climate; swampy land
--₁ is a kind of period, geological period
--₁ is a part of Carboniferous, Carboniferous period

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