Biological taxa that first appeared during the Pennsylvanian epoch of geologic time, between 323.2 and 298.9 million years ago during the Carboniferous Period.
Subcategories
This category has the following 5 subcategories, out of 5 total.
Pages in category "Pennsylvanian first appearances"
The following 89 pages are in this category, out of 89 total. This list may not reflect recent changes.