International Chronostratigraphic Timescale
The interval definitions in this timescale are derived from the following sources:
- K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
- Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 view
- W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. view
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
There are 59 timescales which overlap this one. show
Interval boundaries marked with * have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.
Interval names marked with † are no longer in current use.
This timescale is used in the definition of 127243 collections
International Chronostratigraphic Timescale | Cambrian of West Avalonia | Devonian Subages | Neogene Mammal Ages of China | Ordovician of Britain | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Quaternary | Holocene | Meghalayan | 0 | |||||||
Northgrippian | 0.0042 | |||||||||
Greenlandian | 0.0082 | |||||||||
Pleistocene | Late Pleistocene | Nihewanian | 0.0117 | |||||||
Chibanian | 0.129 | |||||||||
Calabrian | 0.774 | |||||||||
Gelasian | 1.8 | |||||||||
Neogene | Pliocene | Piacenzian | Yushean | 2.58 | ||||||
Zanclean | 3.6 | |||||||||
Baodean | 4.9 | |||||||||
Miocene | Messinian | 5.333 | ||||||||
Tortonian | 7.246 | |||||||||
Tunggurian | 11.1 | |||||||||
Serravallian | 11.63 | |||||||||
Langhian | Shanwangian | 13.82 | ||||||||
Burdigalian | 15.98 | |||||||||
Xiejiaan | 16.9 | |||||||||
Aquitanian | 20.44 | |||||||||
Paleogene | Oligocene | Chattian | 23.03 | |||||||
Rupelian | 27.82 | |||||||||
Eocene | Priabonian | 33.9 | ||||||||
Bartonian | 37.71 | |||||||||
Lutetian | 41.2 | |||||||||
Ypresian | 47.8 | |||||||||
Paleocene | Thanetian | 56 | ||||||||
Selandian | 59.2 | |||||||||
Danian | 61.6 | |||||||||
Cretaceous | Late Cretaceous | Maastrichtian | 66 | |||||||
Campanian | 72.1 | |||||||||
Santonian | 83.6 | |||||||||
Coniacian | 86.3 | |||||||||
Turonian | 89.8 | |||||||||
Cenomanian | 93.9 | |||||||||
Early Cretaceous | Albian | 100.5 | ||||||||
Aptian | 113 | |||||||||
Barremian | 121.4 | |||||||||
Hauterivian | 125.77 | |||||||||
Valanginian | 132.6 | |||||||||
Berriasian | 139.8 | |||||||||
Jurassic | Late Jurassic | Tithonian | 145 | |||||||
Kimmeridgian | 149.2 | |||||||||
Oxfordian | 154.8 | |||||||||
Middle Jurassic | Callovian | 161.5 | ||||||||
Bathonian | 165.3 | |||||||||
Bajocian | 168.2 | |||||||||
Aalenian | 170.9 | |||||||||
Early Jurassic | Toarcian | 174.7 | ||||||||
Pliensbachian | 184.2 | |||||||||
Sinemurian | 192.9 | |||||||||
Hettangian | 199.5 | |||||||||
Triassic | Late Triassic | Rhaetian | 201.4 | |||||||
Norian | 208.5 | |||||||||
Carnian | 227 | |||||||||
Middle Triassic | Ladinian | 237 | ||||||||
Anisian | 242 | |||||||||
Early Triassic | Olenekian | 247.2 | ||||||||
Induan | 251.2 | |||||||||
Permian | Lopingian | Changhsingian | 251.902 | |||||||
Wuchiapingian | 254.14 | |||||||||
Guadalupian | Capitanian | 259.51 | ||||||||
Wordian | 264.28 | |||||||||
Roadian | 266.9 | |||||||||
Cisuralian | Kungurian | 273.01 | ||||||||
Artinskian | 283.5 | |||||||||
Sakmarian | 290.1 | |||||||||
Asselian | 293.52 | |||||||||
Carboniferous | Pennsylvanian | Gzhelian | 298.9 | |||||||
Kasimovian | 303.7 | |||||||||
Moscovian | 307 | |||||||||
Bashkirian | 315.2 | |||||||||
Mississippian | Serpukhovian | 323.2 | ||||||||
Visean | 330.9 | |||||||||
Tournaisian | 346.7 | |||||||||
Devonian | Late Devonian | Famennian | Late Famennian | 358.9 | ||||||
Middle Famennian | 365.3 * | |||||||||
Early Famennian | 368.5 * | |||||||||
Frasnian | Late Frasnian | 372.2 | ||||||||
Middle Frasnian | 375.4 * | |||||||||
Early Frasnian | 379.3 * | |||||||||
Middle Devonian | Givetian | Late Givetian | 382.7 | |||||||
Middle Givetian | 383.7 * | |||||||||
Early Givetian | 385.9 * | |||||||||
Eifelian | Late Eifelian | 387.7 | ||||||||
Early Eifelian | 390.3 * | |||||||||
Early Devonian | Emsian | Late Emsian | 393.3 | |||||||
Early Emsian | 398.3 * | |||||||||
Pragian | Pragian | 407.6 | ||||||||
Lochkovian | Late Lochkovian | 410.8 | ||||||||
Middle Lochkovian | 412.8 * | |||||||||
Early Lochkovian | 415.6 * | |||||||||
Silurian | Pridoli | 419.2 | ||||||||
Ludlow | Ludfordian | 423 | ||||||||
Gorstian | 425.6 | |||||||||
Wenlock | Homerian | 427.4 | ||||||||
Sheinwoodian | 430.5 | |||||||||
Llandovery | Telychian | 433.4 | ||||||||
Aeronian | 438.5 | |||||||||
Rhuddanian | 440.8 | |||||||||
Ordovician | Late Ordovician | Hirnantian | Ashgill | Hirnantian | 443.8 | |||||
Katian | Rawtheyan | 445.2 | ||||||||
Cautleyan | 448.9 * | |||||||||
Pusgillian | 449.3 * | |||||||||
Caradoc | Streffordian | Onnian † | 449.6 * | |||||||
Cheneyan | 451.5 * | |||||||||
Burrellian | 452.7 * | |||||||||
Sandbian | 453 | |||||||||
Actonian † | 453.2 * | |||||||||
Marshbrookian † | Woolstonian † | 454.2 * | ||||||||
Longvillian † | 455.2 * | |||||||||
Aurelucian | 456.8 * | |||||||||
Soudleyan †/Harnagian/Costonian | 457.4 * | |||||||||
Middle Ordovician | Darriwilian | Llanvirn | Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn | 458.4 | ||||||
Abereiddian/Early Llanvirn | 461.3 * | |||||||||
Dapingian | 467.3 | |||||||||
Arenig | Fennian | 468.4 * | ||||||||
Early Ordovician | Floian | 470 | ||||||||
Whitlandian | 471.1 * | |||||||||
Moridunian | 474.3 * | |||||||||
Tremadocian | Tremadoc | Migneintian | 477.7 | |||||||
Cressagian | 480.8 * | |||||||||
485 * | ||||||||||
Cambrian | Furongian | Stage 10 | 485.4 | |||||||
Jiangshanian | 489.5 | |||||||||
Paibian | 494 | |||||||||
Miaolingian | Guzhangian | 497 | ||||||||
Arcadian | 498.4 | |||||||||
Drumian | 500.5 | |||||||||
Wuliuan | 504.5 | |||||||||
Series 2 | Stage 4 | Branchian | 509 | |||||||
Stage 3 | 514 | |||||||||
Placentian | 517.1 | |||||||||
Terreneuvian | Stage 2 | 521 | ||||||||
Fortunian | 529 | |||||||||
538.8 |