408.2 - 387.7 Ma

The definition of this interval in the timescale Devonian of France is taken from the following source:

• W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. 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: Pragian age, Middle Devonian epoch, Emsian age, Early Devonian epoch, Eifelian age
• Devonian Subages: Early Emsian subage, Late Emsian subage, Early Eifelian subage, Late Eifelian subage
• Devonian of Germany: Siegen age
• Devonian of Czechoslovakia: Daleje age, Chotec age, Zlichovian age
• Devonian of Eastern North America: Cazenovian age, Deer Parkian age, Helderbergian age, Southwoodian age, Sawkillian age

This interval is used in the definition of 5 collections

A total of 3712 collections with 28218 occurrences lie within this time span