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
- 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
- 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
- D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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 126148 collections
International Chronostratigraphic Timescale | Cambrian of Britain | Cambrian of China | Ten Million Year Bins | Cambrian of Siberia | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cambrian | Furongian | Stage 10 | Merioneth | Dolgellian/Trempealeauan | Niuchehean | Taoyuanian † | Cambrian 5 | Batyrbaian | Tavgian † | Ketyan †/Yurakian | 485.4 | ||||
Festiniogian | 489.2 * | ||||||||||||||
Jiangshanian | Jiangshanian | 489.5 | |||||||||||||
Aksaian | 490.7 * | ||||||||||||||
Sakian | 492.2 * | ||||||||||||||
Maentwrogian | 493.1 * | ||||||||||||||
Paibian | Paibian | 494 | |||||||||||||
Ensyan †/Maduan/Nganasanian | 494.7 * | ||||||||||||||
Waergangian †/Youshuanian | 494.9 * | ||||||||||||||
Miaolingian | Guzhangian | St Davids | Guzhangian | Wangcunian † | Cambrian 4 | Ayusokkanian | 497 | ||||||||
Mayan/Menevian | 499.5 | ||||||||||||||
Drumian | Drumian | 500.5 | |||||||||||||
Wuliuan | Wuliuan/Taijangian | Cambrian 3 | Amgan/Solvan | 504.5 | |||||||||||
Series 2 | Stage 4 | Caerfai | Duyunian | 509 | |||||||||||
Toyonian | Lenian † | 510 * | |||||||||||||
Botomian | 512.5 * | ||||||||||||||
Stage 3 | Nangaoian | Cambrian 2 | 514 | ||||||||||||
Atdabanian | 515.6 * | ||||||||||||||
Terreneuvian | Stage 2 | Meishucunian | Tommotian | 521 | |||||||||||
Nemakit-Daldynian | 525.5 | ||||||||||||||
Fortunian | Cambrian 1 | Manykaian † | 529 | ||||||||||||
Jinnigian | 530.7 | ||||||||||||||
538.8 |