Bashkirian

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The Bashkirian Age is the first of four ages in the Pennsylvanian Epoch of the Carboniferous period. It lasted from 318.1±1.3 to 311.7±1.1 million years ago. It was preceded by the Serpukhovian age and followed by the Moscovian. This age is named after the republic of Bashkiria in Russia

Carboniferous period
Mississippian Pennsylvanian
Lower/Early Middle Upper/Late Lower/Early Middle Upper/Late
Tournaisian Viséan Serpukhovian Bashkirian Moscovian Kasimovian | Gzhelian