User:Bcasterline/Geologic time scale

From Wikipedia, the free encyclopedia

Eon Era Period Series/
Epoch		 Start, Million
Years Ago
Phane-
rozoic		 Cenozoic Neogene Holocene 0.011430 ± 0.00013
Pleistocene 1.806 ± 0.005
Pliocene 5.332 ± 0.005
Miocene 23.03 ± 0.05
Paleogene
 Oligocene 33.9±0.1
Eocene 55.8±0.2
Paleocene 65.5±0.3
Mesozoic Cretaceous Upper/Late 99.6±0.9
Lower/Early 145.5 ± 4.0
Jurassic Upper/Late 161.2 ± 4.0
Middle 175.6 ± 2.0
Lower/Early 199.6 ± 0.6
Triassic Upper/Late 228.0 ± 2.0
Middle 245.0 ± 1.5
Lower/Early 251.0 ± 0.4
Paleozoic Permian Lopingian 260.4 ± 0.7
Guadalupian 270.6 ± 0.7
Cisuralian 299.0 ± 0.8
Carbon-
iferous/
Pennsyl-
vanian		 Upper/Late 306.5 ± 1.0
Middle 311.7 ± 1.1
Lower/Early 318.1 ± 1.3
Carbon-
iferous/
Missis-
sippian		 Upper/Late 326.4 ± 1.6
Middle 345.3 ± 2.1
Lower/Early 359.2 ± 2.5
Devonian Upper/Late 385.3 ± 2.6
Middle 397.5 ± 2.7
Lower/Early 416.0 ± 2.8
Silurian Pridoli 418.7 ± 2.7
Ludlow 422.9 ± 2.5
Wenlock 428.2 ± 2.3
Llandovery 443.7 ± 1.5
Ordovician Upper/Late 460.9 ± 1.6
Middle 471.8 ± 1.6
Lower/Early 488.3 ± 1.7
Cambrian Furongian 501.0 ± 2.0
Middle 513.0 ± 2.0
Lower/Early 542.0 ± 1.0
Proter-
ozoic
 Neo-
proterozoic		 Ediacaran   630 +5/-30
Cryogenian   850
Tonian   1000
Meso-
proterozoic		 Stenian   1200
Ectasian   1400
Calymmian   1600
Paleo-
proterozoic		 Statherian   1800
Orosirian   2050
Rhyacian   2300
Siderian   2500
Archean
 Neoarchean   2800
Mesoarchean   3200
Paleoarchean   3600
Eoarchean   3800
Hadean
 Lower Imbrian   c.3850
Nectarian   c.3920
Basin Groups   c.4150
Cryptic   c.4570