407.6 - 393.3 Ma

The definition of this interval in the timescale International Chronostratigraphic Timescale is taken from the following source:

• K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view

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

• International Chronostratigraphic Timescale: Early Devonian epoch
• Devonian Subages: Late Emsian subage, Early Emsian subage
• Devonian of France: Couvinien age
• Devonian of Czechoslovakia: Zlichovian age, Daleje age
• Devonian of Eastern North America: Helderbergian age, Deer Parkian age, Sawkillian age

This interval is used in the definition of 923 collections

A total of 1859 collections with 14611 occurrences lie within this time span