Pennsylvanian epoch of geologic time, between 323.2 and 298.9 million years ago during the Carboniferous Period. Also known as the Upper Carboniferous−Late Carboniferous epoch.
Subcategories
This category has the following 6 subcategories, out of 6 total.
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Pages in category "Pennsylvanian (geology)"
The following 6 pages are in this category, out of 6 total. This list may not reflect recent changes.