305.9 - 303.7 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 bottom age has 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 6 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Kasimovian age, Pennsylvanian epoch
• Carboniferous Subepochs: Late Pennsylvanian subepoch
• Carbo-Permian of the Russian Platform: Krevyakinian subage, Dorogomilovian subage, Khamovnikian subage
• Carboniferous of Western Europe: Stephanian A subage, Cantabrian subage, Stephanian age
• Carboniferous of China: Xiaodushanian age, Dalaun age
• Obsolete Carboniferous Ages of China: Mapingian age

This interval is used in the definition of 372 collections

A total of 631 collections with 3955 occurrences lie within this time span