- Late Pennsylvanian
The Late Pennsylvanian (its rocks belong to the Upper Pennsylvanian) is the third and final of three subepochs of the
Pennsylvanianepoch of the Carboniferousperiod. It spans the time between 306.5 ± 1 Ma and 299 ± 0.8 Ma (million years ago). It is divided into two faunal stages, the Kasimovianand the Gzhelian.
* [http://www.stratigraphy.org/geowhen/stages/Late_Pennsylvanian.html GeoWhen Database - Late Pennsylvanian]
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