Steptoean age - Dolgellian age
| International Chronostratigraphic Timescale | Cambrian of North America | Cambrian of Britain | |||||
|---|---|---|---|---|---|---|---|
| Cambrian | Furongian | Stage 10 | Franconian †/Dresbachian/Millardan | Merioneth | Dolgellian/Trempealeauan | 485.4 | |
| Sunwaptan | 487.5 | ||||||
| Festiniogian | 489.2 * | ||||||
| Jiangshanian | 489.5 | ||||||
| Steptoean | 493 * | ||||||
| Maentwrogian | 493.1 * | ||||||
| Paibian | 494 | ||||||
| Miaolingian | Guzhangian | Marjumian | Albertian † | St Davids | 497 | ||
| Drumian | 500.5 | ||||||
| Wuliuan | Topazan | 504.5 | |||||
| Delamaran | 506.5 | ||||||
| Series 2 | Stage 4 | Waucoban † | Caerfai | 509 | |||
| Dyeran | 511 * | ||||||
| Stage 3 | 514 | ||||||
| Montezuman | 514.8 * | ||||||
| Begadean | 519.9 * | ||||||
| Terreneuvian | Stage 2 | 521 | |||||
| Fortunian | 529 | ||||||
| 538.8 | |||||||