323.2 - 315.2 Ma

The definition of this interval in the timescale International Chronostratigraphic Timescale is taken from the following source:

• K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view

There are intervals in 6 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Pennsylvanian epoch
• Carboniferous Subepochs: Early Pennsylvanian subepoch
• Carbo-Permian of the Russian Platform: Severokeltmian subage, Cheremshanian subage, Melekessian subage, Voznesenian subage, Krasnopolyanian subage, Prikamian subage
• Carboniferous of Western Europe: Yeadonian subage, Kinderscoutian subage, Westphalian A subage, Namurian age, Alportian subage, Westphalian age, Chokierian subage, Marsdenian subage, Westphalian B subage
• Carboniferous of China: Lousuan age, Huashibanian age, Dalaun age
• Carboniferous of North America: Atokan age, Morrowan age

This interval is used in the definition of 364 collections

A total of 1132 collections with 5928 occurrences lie within this time span