427.4 - 423 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 4 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Ludfordian age, Gorstian age
• Silurian of the Baltic: Paadla age, Kuressaare age
• Silurian of England: Wenlock (England) age, Tickwood age, Buildwas age, Coalbrookdale age
• Silurian of North America: Niagaran age

This interval is used in the definition of 883 collections

A total of 1761 collections with 13314 occurrences lie within this time span