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
- J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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.
This timescale is used in the definition of 126699 collections
| International Chronostratigraphic Timescale | Cambrian of Britain | Ten Million Year Bins | Cambrian of West Avalonia | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Cambrian | Furongian | Stage 10 | Merioneth | Dolgellian/Trempealeauan | Cambrian 5 | 485.4 | ||||
| Festiniogian | 489.2 * | |||||||||
| Jiangshanian | 489.5 | |||||||||
| Maentwrogian | 493.1 * | |||||||||
| Paibian | 494 | |||||||||
| Miaolingian | Guzhangian | St Davids | Cambrian 4 | 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 | ||||||||||