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
- D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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 126137 collections
| International Chronostratigraphic Timescale | Cambrian of Kazakhstan | Cambrian of Siberia | Cambrian of Australia | Ten Million Year Bins | Cambrian of West Avalonia | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cambrian | Furongian | Stage 10 | Batyrbaian | Batyrbaian | Tavgian † | Ketyan †/Yurakian | Datsonian | Cambrian 5 | 485.4 | |||||
| Payntonian | 486.8 * | |||||||||||||
| Jiangshanian | Iverian | 489.5 | ||||||||||||
| Aksaian | Aksaian | 490.7 * | ||||||||||||
| Sakian | Sakian | 492.2 * | ||||||||||||
| Paibian | Idamean | 494 | ||||||||||||
| Ensyan †/Maduan/Nganasanian | 494.7 * | |||||||||||||
| Miaolingian | Guzhangian | Ayusokkanian | Ayusokkanian | Mindyallan | Cambrian 4 | 497 | ||||||||
| Arcadian | 498.4 | |||||||||||||
| Boomerangian | 499 | |||||||||||||
| Mayan/Menevian | 499.5 | |||||||||||||
| Drumian | Zhanaarykian | Undillan | 500.5 | |||||||||||
| Tuesaian | Floran | 503 | ||||||||||||
| Wuliuan | Amgan/Solvan | Templetonian | Cambrian 3 | 504.5 | ||||||||||
| 505.3 | ||||||||||||||
| Ordian | 507.8 * | |||||||||||||
| Series 2 | Stage 4 | Branchian | 509 | |||||||||||
| Toyonian | Toyonian | Lenian † | 510 * | |||||||||||
| 510.8 * | ||||||||||||||
| Botomian | Botomian | 512.5 * | ||||||||||||
| Stage 3 | Cambrian 2 | 514 | ||||||||||||
| Atdabanian | Atdabanian | 515.6 * | ||||||||||||
| Placentian | 517.1 | |||||||||||||
| Terreneuvian | Stage 2 | Tommotian | Tommotian | 521 | ||||||||||
| Nemakit-Daldynian | 525.5 | |||||||||||||
| Fortunian | Manykaian † | Cambrian 1 | 529 | |||||||||||
| 538.8 | ||||||||||||||