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
- A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 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
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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 126144 collections
International Chronostratigraphic Timescale | Ten Million Year Bins | Cambrian of Britain | Cambrian of West Avalonia | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cambrian | Furongian | Stage 10 | Cambrian 5 | Merioneth | Dolgellian/Trempealeauan | 485.4 | |||||||
Festiniogian | 489.2 * | ||||||||||||
Jiangshanian | 489.5 | ||||||||||||
Maentwrogian | 493.1 * | ||||||||||||
Paibian | 494 | ||||||||||||
Miaolingian | Guzhangian | Cambrian 4 | St Davids | 497 | |||||||||
Arcadian | 498.4 | ||||||||||||
Drumian | 500.5 | ||||||||||||
Wuliuan | Cambrian 3 | 504.5 | |||||||||||
Series 2 | Stage 4 | Caerfai | Branchian | 509 | |||||||||
Stage 3 | Cambrian 2 | 514 | |||||||||||
Placentian | 517.1 | ||||||||||||
Terreneuvian | Stage 2 | 521 | |||||||||||
Fortunian | Cambrian 1 | 529 | |||||||||||
538.8 |