Pennsylvanian period


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Pennsylvanian period

In North America, the second part of what is generally called the Carboniferous period: 320 to 286 million years ago.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Pennsylvanian period - from 310 million to 280 million years agoPennsylvanian period - from 310 million to 280 million years ago; warm climate; swampy land
Carboniferous, Carboniferous period - from 345 million to 280 million years ago
References in periodicals archive ?
Fedexia likely hunted smaller amphibians and 5-inch-long (13-centimeter-long) giant cockroaches that scuttled through the steamy coal swamps of the late Pennsylvanian period, 318 to 299 million years ago.
Abstract: Two cores from Buchanan and Andrew Counties in the Forest City Basin, northwestern Missouri, yielded approximately 1,200 feet of sedimentary rock deposited during the Pennsylvanian Period (approximately 300 million years ago), a period characterized by rapid fluctuations in sea level.
Around 315 million years ago, during the Pennsylvanian period of Earth's history, these regions formed the tropical belt of a huge supercontinent that straddled the equator.

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