From 310 million to 280 million years ago; warm climate; swampy land. Synonyms: Pennsylvanian, Pennsylvanian period, Upper Carboniferous period.
![]() |
![]() |
![]() | ![]() | ![]() | |||
|
|
|
![]() |
Words linked to "Upper Carboniferous" : Upper Carboniferous period, geological period, Carboniferous period, carboniferous, period |
Copyright © 2025 Dictionary One.com |