Era | Period | Epoch |
Started
(millions of years ago) |
|
Cenozoic: 66.4 millions of years ago–present time | Quaternary | Holocene | 0.01 | |
Pleistocene | 1.6 | |||
Tertiary | Neogene | Pliocene | 5.3 | |
Miocene | 23.7 | |||
Paleogene | Oligocene | 36.6 | ||
Eocene | 57.8 | |||
Paleocene | 66.4 | |||
Mesozoic: 245–66.4 millions of years ago | Cretaceous | Late | 97.5 | |
Early | 144 | |||
Jurassic | Late | 163 | ||
Middle | 187 | |||
Early | 208 | |||
Triassic | Late | 230 | ||
Middle | 240 | |||
Early | 245 | |||
Paleozoic: 570–245 millions of years ago | Permian | Late | 258 | |
Early | 286 | |||
Carboniferous | Pennsylvanian | Late | 320 | |
Mississippian | Early | 360 | ||
Devonian | Late | 374 | ||
Middle | 387 | |||
Early | 408 | |||
Silurian | Late | 421 | ||
Early | 438 | |||
Ordovician | Late | 458 | ||
Middle | 478 | |||
Early | 505 | |||
Cambrian | Late | 523 | ||
Middle | 540 | |||
Early | 570 | |||
Precambrian time: 4500-570 millions of years ago | 4500 |
it was so so and as usual
i'm a geology student and happy in finding a geological source.