358.9 - 351.9 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 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: Tournaisian age, Mississippian epoch
• Carboniferous Subepochs: Early Mississippian subepoch
• Carbo-Permian of the Russian Platform: Upinian subage, Malevkian subage, Cherepetian subage, Gumerovian subage, Karakubian subage
• Carboniferous of Western Europe: Ivorian age, Hastarian age
• Carboniferous of China: Tangbagouan age

This interval is used in the definition of 204 collections

A total of 978 collections with 6868 occurrences lie within this time span