https://gcmdservices.gsfc.nasa.gov/kms/concept/47a51602-f1de-4188-ab8d-9aedd88a1936
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definition | The Gzhelian is the youngest stage of the Pennsylvanian and the youngest subsystem of the Carboniferous. The Gzhelian lasted from 303.7 to 298.9 Ma. It follows the Kasimovian age/stage and is followed by the Asselian age/stage, the oldest subdivision of the Permian system. | ||||||
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in scheme | chronounits original |