Gzhelian age - Cisuralian epoch
| International Chronostratigraphic Timescale | |||
|---|---|---|---|
| Permian | Lopingian | Changhsingian | 251.902 |
| Wuchiapingian | 254.14 | ||
| Guadalupian | Capitanian | 259.51 | |
| Wordian | 264.28 | ||
| Roadian | 266.9 | ||
| Cisuralian | Kungurian | 273.01 | |
| Artinskian | 283.5 | ||
| Sakmarian | 290.1 | ||
| Asselian | 293.52 | ||
| Carboniferous | Pennsylvanian | Gzhelian | 298.9 |
| Kasimovian | 303.7 | ||
| Moscovian | 307 | ||
| Bashkirian | 315.2 | ||
| Mississippian | Serpukhovian | 323.2 | |
| Visean | 330.9 | ||
| Tournaisian | 346.7 | ||
| 358.9 | |||