Carboniferous
- 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.
- Proper noun. (geology) the Carboniferous period.
- Adjective. Containing or producing carbon.
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This entry was last updated on RefTopia from its source on 3/20/2012.