318.4 - 312.7 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

The top and bottom ages have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.

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

• International Chronostratigraphic Timescale: Moscovian age, Bashkirian age, Pennsylvanian epoch
• Carboniferous Subepochs: Early Pennsylvanian subepoch, Middle Pennsylvanian subepoch
• Carbo-Permian of the Russian Platform: Cheremshanian subage, Melekessian subage, Kashirian subage, Vereian subage
• Carboniferous of Western Europe: Westphalian age, Westphalian A subage, Westphalian C subage, Westphalian B subage
• Carboniferous of China: Dalaun age

This interval is used in the definition of 87 collections

A total of 447 collections with 1983 occurrences lie within this time span