419.62 - 393.47 Ma

The definition of this interval in the timescale Devonian of Eastern North America 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 6 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Pragian age, Early Devonian epoch, Lochkovian age, Emsian age
• Devonian Subages: Early Lochkovian subage, Middle Lochkovian subage, Early Emsian subage, Late Lochkovian subage, Late Emsian subage
• Devonian of France: Couvinien age, Gedinnine age, Coblencien age
• Devonian of Germany: Siegen age
• Devonian of Czechoslovakia: Daleje age, Zlichovian age
• Devonian of Eastern North America: Sawkillian age, Deer Parkian age

This interval is used in the definition of 45 collections

A total of 4729 collections with 35168 occurrences lie within this time span