323.4 - 318.6 Ma

The definition of this interval in the timescale Carboniferous of North America is taken from the following source:

• F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view

There are intervals in 5 timescales which overlap this one. show

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

This interval is used in the definition of 281 collections

A total of 747 collections with 4510 occurrences lie within this time span