Wolfcampian age - Sakmarian age
| International Chronostratigraphic Timescale | Permian of North America | ||||
|---|---|---|---|---|---|
| Permian | Lopingian | Changhsingian | 251.902 | ||
| Wuchiapingian | 254.14 | ||||
| Guadalupian | Capitanian | Capitanian | 259.51 | ||
| Wordian | Wordian | 264.28 | |||
| Roadian | Roadian | 266.9 | |||
| Cisuralian | Kungurian | Leonardian | Cathedralian | 274.4 | |
| Hessian | 282 | ||||
| Artinskian | 283.3 | ||||
| Wolfcampian | Lenoxian | 286 | |||
| Sakmarian | 290.1 | ||||
| Asselian | Nealian | 293.52 | |||
| 298.9 | |||||