419.2 - 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 6 timescales which overlap this one. show

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

This interval is used in the definition of 325 collections

A total of 4423 collections with 33433 occurrences lie within this time span