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
- 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
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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 126610 collections
International Chronostratigraphic Timescale | Cambrian of West Avalonia | Cambrian of North America | ||||||
---|---|---|---|---|---|---|---|---|
Cambrian | Furongian | Stage 10 | Franconian †/Dresbachian/Millardan | 485.4 | ||||
Sunwaptan | 487.5 | |||||||
Jiangshanian | 489.5 | |||||||
Steptoean | 493 * | |||||||
Paibian | 494 | |||||||
Miaolingian | Guzhangian | Marjumian | Albertian † | 497 | ||||
Arcadian | 498.4 | |||||||
Drumian | 500.5 | |||||||
Wuliuan | Topazan | 504.5 | ||||||
Delamaran | 506.5 | |||||||
Series 2 | Stage 4 | Branchian | Waucoban † | 509 | ||||
Dyeran | 511 * | |||||||
Stage 3 | 514 | |||||||
Montezuman | 514.8 * | |||||||
Placentian | 517.1 | |||||||
Begadean | 519.9 * | |||||||
Terreneuvian | Stage 2 | 521 | ||||||
Fortunian | 529 | |||||||
538.8 |