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Noun: Upper Carboniferous
  1. The period from 310 million to 280 million years ago; characterized by warm climate and swampy land
    - Pennsylvanian, Pennsylvanian period, Upper Carboniferous period

Type of: geological period, period

Part of: Carboniferous, Carboniferous period

Encyclopedia: Upper Carboniferous

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upmost
upon
upon one's guard
upper
Upper Avon
Upper Avon River
upper balcony
upper berth
upper bound
upper cannon
Upper Carboniferous
Upper Carboniferous period
upper class
upper crust
upper deck
Upper Egypt
upper hand
upper jaw
upper jawbone
upper limit
upper mantle