335.8 - 323.2 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 5 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Mississippian epoch, Serpukhovian age, Visean age
• Carboniferous Subepochs: Late Mississippian subepoch, Middle Mississippian subepoch
• Carbo-Permian of the Russian Platform: Tarusian subage, Aleksinian subage, Mikhailovian subage, Venevian subage, Protvian subage, Zapaltjubian subage, Steshevian subage
• Carboniferous of Western Europe: Namurian age, Warnantian age, Pendleian subage, Brigantian subage, Arnsbergian subage, Chokierian subage
• Carboniferous of China: Jiusian age, Shangsian age, Dewunian age

This interval is used in the definition of 325 collections

A total of 1870 collections with 14308 occurrences lie within this time span