Geologic Timescale



Geologic Timescale

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

User Contributions:

1
zahra
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Dec 2, 2009 @ 3:15 pm
thanks a lot
it was so so and as usual
i'm a geology student and happy in finding a geological source.

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