Quaternary
Includes current
Holocene epoch
which covers the
last 11,700 years
Cambrian
Ordovician
Silurian
Devonian
Carboniferous
Permian
Triassic
Jurassic
Cretaceous
Tertiary
540
500
440
420
360
300
250
200
145
65
2.6
Paleozoic
Mesozoic
Cenozoic
Division of geological periods
Million years ago
Division of geological periods from 540m years ago to the present
Quaternary
Includes current
Holocene epoch
which covers the
last 11,700 years
Million years ago