Furongian epoch - Tremadocian age
| International Chronostratigraphic Timescale | |||
|---|---|---|---|
| Ordovician | Late Ordovician | Hirnantian | 443.1 |
| Katian | 445.2 | ||
| Sandbian | 452.8 | ||
| Middle Ordovician | Darriwilian | 458.2 | |
| Dapingian | 469.4 | ||
| Early Ordovician | Floian | 471.3 | |
| Tremadocian | 477.1 | ||
| Cambrian | Furongian | Stage 10 | 486.85 |
| Jiangshanian | 491 | ||
| Paibian | 494.2 | ||
| Miaolingian | Guzhangian | 497 | |
| Drumian | 500.5 | ||
| Wuliuan | 504.5 | ||
| Series 2 | Stage 4 | 506.5 | |
| Stage 3 | 514.5 | ||
| Terreneuvian | Stage 2 | 521 | |
| Fortunian | 529 | ||
| 538.8 | |||