Carboniferous

  1. Adjective.  (geology) of a geologic period within the Paleozoic era; comprises the lower, middle and upper Mississippian and lower, middle and upper Pennsylvanian epochs from about 345 to 280 million years ago, when coal was laid down.
  2. Proper noun.  (geology) the Carboniferous period.
  3. Adjective.  Containing or producing carbon.

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This entry was last updated on RefTopia from its source on 3/20/2012.