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
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
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 127017 collections
International Chronostratigraphic Timescale | Ten Million Year Bins | Cambrian of Australia | Cambrian of China | Cambrian of Kazakhstan | Cambrian of North America | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Cambrian | Furongian | Stage 10 | Cambrian 5 | Datsonian | Niuchehean | Taoyuanian † | Batyrbaian | Franconian †/Dresbachian/Millardan | 485.4 | |||
Payntonian | 486.8 * | |||||||||||
Sunwaptan | 487.5 | |||||||||||
Jiangshanian | Iverian | Jiangshanian | 489.5 | |||||||||
Aksaian | 490.7 * | |||||||||||
Sakian | 492.2 * | |||||||||||
Steptoean | 493 * | |||||||||||
Paibian | Idamean | Paibian | 494 | |||||||||
Waergangian †/Youshuanian | 494.9 * | |||||||||||
Miaolingian | Guzhangian | Cambrian 4 | Mindyallan | Guzhangian | Wangcunian † | Ayusokkanian | Marjumian | Albertian † | 497 | |||
Boomerangian | 499 | |||||||||||
499.5 | ||||||||||||
Drumian | Undillan | Drumian | Zhanaarykian | 500.5 | ||||||||
Floran | Tuesaian | 503 | ||||||||||
Wuliuan | Cambrian 3 | Templetonian | Wuliuan/Taijangian | Topazan | 504.5 | |||||||
505.3 | ||||||||||||
Delamaran | 506.5 | |||||||||||
Ordian | 507.8 * | |||||||||||
Series 2 | Stage 4 | Duyunian | Waucoban † | 509 | ||||||||
Toyonian | 510 * | |||||||||||
510.8 * | ||||||||||||
Dyeran | 511 * | |||||||||||
Botomian | 512.5 * | |||||||||||
Stage 3 | Cambrian 2 | Nangaoian | 514 | |||||||||
Montezuman | 514.8 * | |||||||||||
Atdabanian | 515.6 * | |||||||||||
Begadean | 519.9 * | |||||||||||
Terreneuvian | Stage 2 | Meishucunian | Tommotian | 521 | ||||||||
525.5 | ||||||||||||
Fortunian | Cambrian 1 | 529 | ||||||||||
Jinnigian | 530.7 | |||||||||||
538.8 |