Upper Carboniferous Period — synonyms, definition
1. Upper Carboniferous period (Noun)
3 synonyms
Pennsylvanian Pennsylvanian period Upper Carboniferous
1 definition
Upper Carboniferous period (Noun) — From 310 million to 280 million years ago; warm climate; swampy land.
2 types of
geological period period
2 parts of
Carboniferous Carboniferous period