Carboniferous period

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Carboniferous period

a geological period that began about 370 million years ago and ended 280 million years ago. It is often divided at about 325 million BP into Lower and Upper Carboniferous; the coal measures from which the period derives its name occurred mainly in the latter period. Club mosses, horsetails and ferns were the dominant plants during the period, and amphibians the commonest vertebrates, though this was also the time of the emergence of the reptiles. Britain crossed the equator.
References in periodicals archive ?
Their success may have been a result of a long-term, global trend toward drier, warmer conditions that reached its climax near the end of the Pennsylvanian Period.
This is just the opposite of what scientists had thought was the last major movement during the Pennsylvanian period some 300 million years ago, in which the Wichita Mountains to the south were uplifted, causing land north of the fault to sink.
The scrap of a much older fault, such as one from the Pennsylvanian period, would have been considerably more worn and would have been obliterated in the shaley soils.

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