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Upper Carboniferous period
Thesaurus| Noun | 1. |  Upper Carboniferous period - from 310 million to 280 million years ago; warm climate; swampy landPennsylvanian, Pennsylvanian period, Upper CarboniferousCarboniferous, Carboniferous period - from 345 million to 280 million years ago |
Upper Carboniferous period
Related to Upper Carboniferous period: Early CarboniferousSynonyms for Upper Carboniferous periodnoun from 310 million to 280 million years agoSynonyms- Pennsylvanian
- Pennsylvanian period
- Upper Carboniferous
Related Words- Carboniferous
- Carboniferous period
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