Pennsylvanian Period — synonyms, definition

1. Pennsylvanian period (Noun)

3 synonyms
Pennsylvanian Upper Carboniferous Upper Carboniferous period
1 definition

Pennsylvanian 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
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