| Eon | Era | Period | Time (millions of years ago) | |
|---|---|---|---|---|
| Phanerozoic | Cenozoic | Quaternary | 1.8–present | |
| Neogene | 23–1.8 | |||
| Paleogene | 65.5–23 | |||
| Mesozoic | Cretaceous | 146–65.5 | ||
| Jurassic | 200–146 | |||
| Triassic | 251–200 | |||
| Paleozoic | Permian | 299–251 | ||
| Carboniferous | 359–299 | |||
| Devonian | 416–359 | |||
| Silurian | 444–416 | |||
| Ordovician | 488–444 | |||
| Cambrian | 542–488 | |||
| Precambrian Time | Proterozoic | 2500–542 | ||
| Archean | 4000–2500 | |||
| Hadean | About 4600–4000 |