Cambrian of Britain
The interval definitions in this timescale are derived from the following sources:
- 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 602 collections
| International Chronostratigraphic Timescale | Cambrian of Britain | Cambrian of Kazakhstan | ||||
|---|---|---|---|---|---|---|
| Ordovician | Early Ordovician | Tremadocian | Ungurian | 477.7 | ||
| Cambrian | Furongian | Stage 10 | Merioneth | Dolgellian/Trempealeauan | Batyrbaian | 485.4 |
| Festiniogian | 489.2 * | |||||
| Jiangshanian | 489.5 | |||||
| Aksaian | 490.7 * | |||||
| Sakian | 492.2 * | |||||
| Maentwrogian | 493.1 * | |||||
| Paibian | 494 | |||||
| Miaolingian | Guzhangian | St Davids | Ayusokkanian | 497 | ||
| 499.5 | ||||||
| Drumian | Zhanaarykian | 500.5 | ||||
| Tuesaian | 503 | |||||
| Wuliuan | 504.5 | |||||
| 505.3 | ||||||
| Series 2 | Stage 4 | Caerfai | 509 | |||
| Toyonian | 510 * | |||||
| Botomian | 512.5 * | |||||
| Stage 3 | 514 | |||||
| Atdabanian | 515.6 * | |||||
| Terreneuvian | Stage 2 | Tommotian | 521 | |||
| 525.5 | ||||||
| Fortunian | 529 | |||||
| 538.8 | ||||||