Morrowan age - Desmoinesian age
| International Chronostratigraphic Timescale | Carboniferous of North America | |||
|---|---|---|---|---|
| Carboniferous | Pennsylvanian | Gzhelian | Virgilian | 298.9 |
| Kasimovian | Missourian | 303.7 | ||
| Desmoinesian | 305.9 * | |||
| Moscovian | 307 | |||
| Atokan | 312.7 * | |||
| Bashkirian | 315.2 | |||
| Morrowan | 318.4 * | |||
| Mississippian | Serpukhovian | Chesterian | 323.2 | |
| Visean | 330.9 | |||
| Meramecian | 335.8 * | |||
| Osagean | 343.1 * | |||
| Tournaisian | 346.7 | |||
| Kinderhookian | 351.9 * | |||
| 358.9 | ||||