International Chronostratigraphic Timescale
The interval definitions in this timescale are derived from the following sources:
- K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
- 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
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
- A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 view
There are 59 timescales which overlap this one. show
Interval boundaries marked with * have 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.
Interval names marked with † are no longer in current use.
This timescale is used in the definition of 126973 collections
International Chronostratigraphic Timescale | Silurian Ages of Europe | Silurian of England | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Silurian | Pridoli | Red Downtonian/Temeside Shales/Downton Castle | Whitcliffe/Leintwardine | 419.2 | ||||||||
Bringewood/Elton | 421.3 | |||||||||||
Ludlow | Ludfordian | Coalbrookdale | Wenlock (England)/Tickwood | 423 | ||||||||
Gorstian | 425.6 | |||||||||||
Buildwas | 426.4 * | |||||||||||
Wenlock | Homerian | Gleedonian | 427.4 | |||||||||
Wych | Woolhope | 428.4 * | ||||||||||
Whitwellian | 429.7 * | |||||||||||
Sheinwoodian | 430.5 | |||||||||||
Llandovery | Telychian | 433.4 | ||||||||||
436.3 * | ||||||||||||
Aeronian | 438.5 | |||||||||||
Cowleigh Park | 439.3 * | |||||||||||
Rhuddanian | 440.8 | |||||||||||
443.8 |