History of the Earth Age AGE Eon Era Period Period Epoch Stage Paleogeographic Maps Earth History (Ma) Era (Ma) Holocene Neogene Quaternary* Pleistocene Calabrian/Gelasian Piacenzian 2.6 Cenozoic Pliocene Zanclean Paleogene Messinian 5.3 L Tortonian 100 Cretaceous Serravallian Miocene M Langhian E Burdigalian Jurassic Neogene Aquitanian 200 23 L Chattian Triassic Oligocene E Rupelian Permian 34 Early Neogene 300 L Priabonian Bartonian Carboniferous Cenozoic M Eocene Lutetian 400 Phanerozoic Devonian E Ypresian Silurian Paleogene L Thanetian 56 PaleozoicOrdovician Mesozoic Paleocene M Selandian 500 E Danian Cambrian 66 Maastrichtian Ediacaran 600 Campanian Late Santonian 700 Coniacian Turonian Cenomanian Late Cretaceous 100 800 Cryogenian Albian 900 Neoproterozoic Tonian Cretaceous Aptian Early 1000 Barremian Hauterivian Valanginian 1100 Stenian Berriasian 146 Tithonian Early Cretaceous 1200 Late Kimmeridgian Oxfordian 161 Callovian Mesozoic 1300 Ectasian Bathonian Middle Bajocian Aalenian 176 1400 Toarcian Jurassic Mesoproterozoic Early Pliensbachian 1500 Sinemurian Hettangian Calymmian 200 Rhaetian 1600 Proterozoic Norian Late 1700 Statherian Carnian 228 1800 Ladinian Late Triassic Triassic Middle Anisian 1900 245 Olenekian Orosirian Early Induan Changhsingian 251 2000 Lopingian Wuchiapingian 260 Capitanian Guadalupian Wordian/Roadian 2100 271 Kungurian Paleoproterozoic Rhyacian Artinskian 2200 Permian Cisuralian Sakmarian Middle Permian 2300 Asselian 299 Late Gzhelian Kasimovian 2400 Siderian Middle Moscovian Penn- sylvanian Early Bashkirian 318 2500 Late Serpukhovian 2600 Middle Visean Carboniferous 2700 Mississippian Neoarchean Early Tournaisian Middle Mississippian 2800 359 Famennian 2900 Late Frasnian 385 3000 Givetian Middle Eifelian 398 3100 Devonian Mesoarchean Emsian Paleozoic Early Pragian 3200 Lochkovian 416 Early Middle Devonian Pridoli 419 Ludlow Ludfordian/Gorstian 423 3300 Wenlock Homerian/Sheinwoodian 428 Archean Telychian Llandovery 3400 Silurian Aeronian/Rhuddanian Hirnantian 444 3500 Katian Paleoarchean Late Sandbian 461 3600 Darriwilian Middle 472 Floian 3700 Ordovician Early Tremadocian Middle Ordovician 488 3800 Stage 10 Furongian Stage 9 Paibian 501 Eoarchean Stage 7 3900 Series 3 Drumian Stage 5 510 Stage 4 Map Legend 4000 Series 2 Stage 3 Spreading Center O Ocean Mountain Belt Or Orogeny 521 (mountain- Lower limit is Subduction Zone building episode) Cambrian Stage 2 AFR Africa IND India 4100 not defined Series 1 ANT Antarctica NAM North America AUS Australia SAM South America BAL Baltica SIB Siberia Stage 1 542 Gon Gondwana International divisions of geologic time (eras, periods, epochs, stages) are standardized by the International Commission on Stratigraphy (ICS, www.stratigraphy.org). The color scheme of the Commission for the Geological Map of the World is shown for these divisions, This poster was developed in collaboration with the United States and their numerical ages are from "A Geologic Time Scale 2004" (Gradstein et al., Cambridge University Press). Paleogeographic maps Geological Survey and with the CHRONOS program (sponsored by Copyright © 2007, were provided courtesy of Ron Blakey with plate positions modified from Chris Scotese. The evolution of life is modified from John the U.S. National Science Foundation). Gurche’s painting “Tower of Time” (© Smithsonian Institution). This chart was compiled and drafted by Gabi Ogg and Bruce Wardlaw. International Commission * The status of the Quaternary is not yet decided. Its base may be assigned as the base of the Gelasian and extend the base of the on Stratigraphy ICS Pleistocene to 2.6 Ma..