| Age (Ma) | Period, Era or Epoch | Eon or Era |
| 3600 - 3850 | |
| 3200 - 3600 | |
| 2800 - 3200 | |
| 2500 - 2800 | |
| 2300 - 2500 | |
| 2050 - 2300 | |
| 1800 - 2050 | |
| 1600 - 1800 | |
| 1400 - 1600 | |
| 1200 - 1400 | |
| 1000 - 1200 | |
| 850 - 1000 | |
| 630 - 850 | |
| 542 - 630 | |
| 488 - 542 | |
| 444 - 488 | |
| | Age (Ma) | Period, Era or Epoch | Eon or Era |
| 416 - 444 | |
| 359 - 416 | |
| 318 - 359 | |
| 299 - 318 | |
| 251 - 299 | |
| 201.6 - 251 | |
| 145.5 - 201.6 | |
| 65.5 - 145.5 | |
| 55.8 - 65.5 | |
| 33.9 - 55.8 | |
| 23 - 33.9 | |
| 5.3 - 23 | |
| 2.6 - 5.3 | |
| 0.01 - 2.6 | |
| Present - 0.01 | |
|