Topazan age
505.3 - 504.5 Ma
The definition of this interval in the timescale Cambrian of North America is taken from the following source:
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
The bottom age has 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.
There are intervals in 10 timescales which overlap this one. show
This interval is used in the definition of 4 collections
A total of 1 collections with 62 occurrences lie within this time span
| International Chronostratigraphic Timescale | Cambrian of North America | ||||
|---|---|---|---|---|---|
| Cambrian | Furongian | Stage 10 | Franconian †/Dresbachian/Millardan | 486.85 | |
| Sunwaptan | 488.9 * | ||||
| Jiangshanian | 491 | ||||
| Steptoean | 493.5 | ||||
| Paibian | 494.2 | ||||
| Miaolingian | Guzhangian | Marjumian | Albertian † | 497 | |
| Drumian | 500.5 | ||||
| Wuliuan | Topazan | 504.5 | |||
| Delamaran | 505.3 * | ||||
| Series 2 | Stage 4 | Waucoban † | 506.5 | ||
| Dyeran | 509.7 * | ||||
| Stage 3 | 514.5 | ||||
| Montezuman | 515.3 | ||||
| Begadean | 520 | ||||
| Terreneuvian | Stage 2 | 521 | |||
| Fortunian | 529 | ||||
| 538.8 | |||||