Cambrian Epochs
The interval definitions in this timescale are derived from the following sources:
- 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
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
There are 12 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 594 collections
| International Chronostratigraphic Timescale | Cambrian Epochs | Cambrian of Britain | Cambrian of West Avalonia | ||||
|---|---|---|---|---|---|---|---|
| Cambrian | Furongian | Stage 10 | Late Cambrian | Merioneth | Dolgellian/Trempealeauan | 485.4 | |
| Festiniogian | 489.2 * | ||||||
| Jiangshanian | 489.5 | ||||||
| Maentwrogian | 493.1 * | ||||||
| Paibian | 494 | ||||||
| Miaolingian | Guzhangian | Middle Cambrian | St Davids | 497 | |||
| Arcadian | 498.4 | ||||||
| Drumian | 500.5 | ||||||
| Wuliuan | 504.5 | ||||||
| Series 2 | Stage 4 | Early Cambrian | Caerfai | Branchian | 509 | ||
| Stage 3 | 514 | ||||||
| Placentian | 517.1 | ||||||
| Terreneuvian | Stage 2 | 521 | |||||
| Fortunian | 529 | ||||||
| 538.8 | |||||||