Serravallian Langhian Burdigalian Aquitanian Paleogene Chattian Rupelian Priabonian Eocene Bartonian Lutetian Ypresian Thanetian Paleocene Selandian Danian Maastrichtian Campanian Cretaceous Upper Santonian Coniacian Turonian Cenomanian Albian Aptian Lower Barremian Hauterivian Mesozoic Valanginian Berriasian Tithonian Upper Kimmeridgian Oxfordian Jurassic Callovian Middle Bathonian Bajocian Aalenian Toarcian Lower Pliensbachian Sinemurian Triassic Hettangian Rhaetian Upper Norian Carnian 3.60 5.33 7.25 Cisuralian 11.63 13.82 15.97 20.44 23.03 28.1 33.9 38.0 41.0 47.8 61.6 66.0 72.1 84.2 86.5 89.8 93.9 100.5 113.1 Lower Upper Middle Lower Upper 56.0 59.2 Upper Middle Middle Lower Pridoli Ludlow 126.3 Wenlock Llandovery 130.8 134.7 139.4 145.0 152.1 157.3 163.1 166.1 Upper Middle Lower 168.3 170.3 Furongian 174.2 183.7 191.4 199.4 201.4 ~ 209.6 ~ 228.5 237.0 * Anthropocene under discussion Series 3 Series 2 Terreneuvian Ladinian Anisian Olenekian Induan Changhsingian Ediacaran Neoproterozoic Cryogenian Tonian 241.5 246.8 249.8 251.9 254.2 Wuchiapingian 259.8 Capitanian 265.1 Wordian 268.8 Roadian 272.3 Kungurian 282.0 Artinskian 290.1 Sakmarian 295.0 Asselian 298.9 Gzhelian 303.4 Kasimovian 306.7 Moscovian 314.6 Bashkirian 323.2 Serpukhovian 330.9 Visean 346.7 Tournaisian 358.9 Famennian 372.2 Frasnian 382.7 Givetian 387.7 Eifelian 393.3 Emsian 407.6 Pragian 410.8 Lochkovian 419.2 423.0 Ludfordian 425.6 Gorstian 427.4 Homerian 430.5 Sheinwoodian 433.4 Telychian 438.5 Aeronian 440.8 Rhuddanian 443.8 Hirnantian 445.2 Katian 453.0 Sandbian 458.4 Darriwilian 467.3 Dapingian 470.0 Floian 477.7 Tremadocian 485.4 Stage 10 489.5 Jiangshanian 494 Paibian 497 Guzhangian 500.5 Drumian 504.5 Stage 5 509 Stage 4 514 Stage 3 ~ 520 Stage 2 ~ 530 Fortunian 541.0 Erathem/ System/ Age Era Period Ma Mesoproterozoic Stenian Ectasian Calymmian Statherian Orosirian Paleoproterozoic Rhyacian Siderian Neoarchean Mesoarchean Paleoarchean GSSP/ GSSA 237.0 Eonothem Eon Age Ma GSSP System Period Triassic Mesozoic 2.58 Guadalupian Stage/Age Precambrian Archean Proterozoic Tortonian Miocene 1.80 Pennsylvanian Zanclean Messinian Oligocene Phanerozoic Piacenzian Lower Mississippian Neogene Cenozoic Pliocene Middle 773 ka Permian Gelasian Series/ Epoch Lopingian Carboniferous “Ionian” Calabrian 126 ka Devonian Pleistocene 8.2 ka 11.8 ka Paleozoic Lower Upper 4.2 ka Silurian Middle Ordovician Holocene Cambrian Quaternary Anthropocene * Upper Age Ma Eonothem Eon Erathem Era Stage/Age Phanerozoic Series/ Epoch GSSP System Period Eonothem Eon Erathem Era PHANEROZOIC and PRECAMBRIAN CHRONOSTRATIGRAPHY 2016 541 635 720 1000 1200 1400 1600 1800 2050 2300 2500 2800 3200 3600 Eoarchean Hadean (informal) 4000 ~4560 Units of the international chronostratigraphic scale with estimated numerical ages. Colors are according to the Commission for the Geological Map of the World. Subdivisions of the Phanerozoic (~541 Ma to Present) and the base of the Ediacaran are defined by a basal Global Boundary Stratotype Section and Point (GSSP ), whereas the Precambrian units are formally subdivided by absolute age (Global Standard Stratigraphic Age, GSSA). Stratigraphic information and details on international and regional geologic units can be found on the websites of the Geologic TimeScale Foundation https://engineering.purdue.edu/s tratigraphy and the ICS www.stratigraphy.org. This chart was drafted by Gabi Ogg
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