Gzhelian
fourth and last age of the Pennsylvanian epoch / From Wikipedia, the free encyclopedia
The Gzhelian is the youngest stage of the Pennsylvanian. It is more or less coeval with the Stephanian Stage of the regional stratigraphy of Europe.
The Gzhelian is the youngest stage of the Pennsylvanian. It is more or less coeval with the Stephanian Stage of the regional stratigraphy of Europe.