NOUN | time | Upper Carboniferous period, Pennsylvanian, Pennsylvanian period, Upper Carboniferous | from 310 million to 280 million years ago |
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Meaning | From 310 million to 280 million years ago; warm climate; swampy land. | |
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Synonyms | Pennsylvanian, Pennsylvanian period, Upper Carboniferous | |
Instance of | period, geological period | A unit of geological time during which a system of rocks formed |
Part of | Carboniferous, Carboniferous period | From 345 million to 280 million years ago |
Spanish | pennsylvaniense |
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