Cambrian of West Avalonia
The interval definitions in this timescale are derived from the following source:
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
There are 9 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 53 collections
| International Chronostratigraphic Timescale | Cambrian of West Avalonia | Cambrian of Kazakhstan | |||
|---|---|---|---|---|---|
| Ordovician | Early Ordovician | Tremadocian | Ungurian | 477.7 | |
| Cambrian | Furongian | Stage 10 | Batyrbaian | 485.4 | |
| Jiangshanian | 489.5 | ||||
| Aksaian | 490.7 * | ||||
| Sakian | 492.2 * | ||||
| Paibian | 494 | ||||
| Miaolingian | Guzhangian | Ayusokkanian | 497 | ||
| Arcadian | 498.4 | ||||
| 499.5 | |||||
| Drumian | Zhanaarykian | 500.5 | |||
| Tuesaian | 503 | ||||
| Wuliuan | 504.5 | ||||
| 505.3 | |||||
| Series 2 | Stage 4 | Branchian | 509 | ||
| Toyonian | 510 * | ||||
| Botomian | 512.5 * | ||||
| Stage 3 | 514 | ||||
| Atdabanian | 515.6 * | ||||
| Placentian | 517.1 | ||||
| Terreneuvian | Stage 2 | Tommotian | 521 | ||
| 525.5 | |||||
| Fortunian | 529 | ||||
| 538.8 | |||||