Osagean age - Meramecian age
| International Chronostratigraphic Timescale | Carboniferous of North America | |||
|---|---|---|---|---|
| Carboniferous | Pennsylvanian | Gzhelian | Virgilian | 298.9 |
| Kasimovian | Missourian | 303.7 | ||
| Desmoinesian | 306 | |||
| Moscovian | 307 | |||
| Atokan | 312.8 | |||
| Bashkirian | 315.2 | |||
| Morrowan | 318.6 | |||
| Mississippian | Serpukhovian | Chesterian | 323.4 | |
| Visean | 330.3 | |||
| Meramecian | 335.4 * | |||
| Osagean | 342.9 * | |||
| Tournaisian | 346.7 | |||
| Kinderhookian | 351.9 * | |||
| 358.86 | ||||