User:Bcasterline/Geologic time scale From Wikipedia, the free encyclopedia More information Eon, Era ... Eon Era Period Series/Epoch Start, MillionYears 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 Close Related Articles