407.6 - 393.3 Ma

The definition of this interval in the timescale Devonian of Czechoslovakia 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

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

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

This interval is used in the definition of 6 collections

A total of 1970 collections with 15196 occurrences lie within this time span