Serpukhovian

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The Serpukhovian age is the last of three ages in the Mississippian Epoch of the Carboniferous Period. It lasted from 326.5±1.6 to 318.1±1.3 million years ago. It was preceded by the Visean age and followed by the Bashkirian age. This age is named after the town of Serpukhov (Се́рпухов) in Russia

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