Drumian age - Marjumian age
| 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 | |||||