Geological Timescale

The timescale of each Epoch, Period and Era are tabulated below:

Epoch	from	to
Holocene	10000	present day
Pleistocene	1.64 million	10000
Pliocene	5.2 million	1.64 million
Miocene	23.5 million	5.2 million
Oligocene	35.5 million	23.5 million
Eocene	56.5 million	35.5 million
Palaeocene	65 million	56.5 million

Period	from	to
Quaternary	1.64 million	present day
Tertiary	65 million	1.64 million
Cretaceous	144.2 million	65 million
Jurassic	208 million	146 million
Triassic	245 million	208 million
Permian	290 million	245 million
Carboniferous	362.5 million	290 million
Devonian	408 million	360 million
Silurian	439 million	409 million
Ordovician	510 million	439 million
Cambrian	570 million	510 million
Proterozic	1.0 billion	570 million
Archaeozic	4.6 billion	1.0 billion

Era	from	to
Cenozoic	65 million	present day
Mesozoic	245 million	65 million
Paleozoic	570 million	245 million
Precambrian	4.6 billion	570 million

Eon	from	to
Phanerozoic	570 million	present day
Proterozoic	2.6 billion	570 million
Archaean	3.9 billion	2.6 billion
Hadean	4.6 billion	3.9 billion

See also: Archaean, Archaeozic, Cambrian, Carboniferous, Cenozoic, Cretaceous, Devonian, Eocene, Hadean, Holocene, Jurassic, Mesozoic, Miocene, Oligocene, Ordovician, Palaeocene, Paleozoic, Permian, Phanerozoic, Pleistocene, Pliocene, Precambrian, Proterozic, Proterozoic, Quaternary, Silurian, Tertiary, Triassic.