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
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
- J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 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 126973 collections
International Chronostratigraphic Timescale | Permian of Western Europe | Cambrian of China | Cambrian of Kazakhstan | Permian of the Salt Range | Permian of the Pamirs | Ammonite Chrons of Northwest Europe | Ordovician of China | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jurassic | Middle Jurassic | Bajocian | Parkinsoni/Garantiana/Subfurcatum/Sauzei/Laeviuscula/Discites | 168.2 | ||||||||||
Humphresianum | 168.4 | |||||||||||||
Aalenian | Concavum/Murchisonae/Opalinum | 170.9 | ||||||||||||
Early Jurassic | Toarcian | Levesquei/Variabilis/Bifrons | Thouarsense | 174.7 | ||||||||||
180.1 | ||||||||||||||
Serpentinum/Falciferum/Tenuicostatum | 182 | |||||||||||||
Pliensbachian | Spinatum/Margaritatus/Davoei/Ibex/Jamesoni | 184.2 | ||||||||||||
Sinemurian | Raricostatum/Oxynotum/Obtusum/Turneri/Semicostatum/Bucklandi | 192.9 | ||||||||||||
Hettangian | Angulata/Liasicus/Planorbis | 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 | |||||||||||||
Kathwai | 251.5 * | |||||||||||||
Permian | Lopingian | Changhsingian | Dorashamian | 251.902 | ||||||||||
252.4 * | ||||||||||||||
Chhidru | 252.9 * | |||||||||||||
Wuchiapingian | Zechstein | Dzhulfian | 254.14 | |||||||||||
Kalabagh | 255 * | |||||||||||||
Wargal | 256 * | |||||||||||||
Guadalupian | Capitanian | Rotliegendes | Midian | 259.51 | ||||||||||
Wordian | 264.28 | |||||||||||||
265.3 * | ||||||||||||||
Amb | 266.1 * | |||||||||||||
Murgabian | 266.2 * | |||||||||||||
Roadian | 266.9 | |||||||||||||
270.7 * | ||||||||||||||
Cisuralian | Kungurian | Kubergandian | 273.01 | |||||||||||
Bolorian | 279.8 | |||||||||||||
Artinskian | Autunian | 283.5 | ||||||||||||
Yakhtashian | 286 | |||||||||||||
Sakmarian | Sakmarian | 290.1 | ||||||||||||
Asselian | 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 | 358.9 | |||||||||||
Frasnian | 372.2 | |||||||||||||
Middle Devonian | Givetian | 382.7 | ||||||||||||
Eifelian | 387.7 | |||||||||||||
Early Devonian | Emsian | 393.3 | ||||||||||||
Pragian | 407.6 | |||||||||||||
Lochkovian | 410.8 | |||||||||||||
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 | Hirnantian | Xiaoxita †/Shikou | Wufeng † | 443.8 | ||||||||
Katian | Chientangkiangian | 445.2 | ||||||||||||
Neichianshanian/Hanjiang | 449.5 | |||||||||||||
Sandbian | 453 | |||||||||||||
Middle Ordovician | Darriwilian | Darriwilian | Guniu †/Hulo | 458.4 | ||||||||||
Hunjiang † | Dawan †/Daobaowan/Ningkuo | 466.3 * | ||||||||||||
Dapingian | Dapingian | 467.3 | ||||||||||||
Early Ordovician | Floian | Yiyangian | 470 | |||||||||||
Tremadocian | Ungurian | Xinchangian | 477.7 | |||||||||||
Lianghekou † | 477.9 * | |||||||||||||
Cambrian | Furongian | Stage 10 | Niuchehean | Taoyuanian † | Batyrbaian | 485.4 | ||||||||
Jiangshanian | Jiangshanian | 489.5 | ||||||||||||
Aksaian | 490.7 * | |||||||||||||
Sakian | 492.2 * | |||||||||||||
Paibian | Paibian | 494 | ||||||||||||
Waergangian †/Youshuanian | 494.9 * | |||||||||||||
Miaolingian | Guzhangian | Guzhangian | Wangcunian † | Ayusokkanian | 497 | |||||||||
499.5 | ||||||||||||||
Drumian | Drumian | Zhanaarykian | 500.5 | |||||||||||
Tuesaian | 503 | |||||||||||||
Wuliuan | Wuliuan/Taijangian | 504.5 | ||||||||||||
505.3 | ||||||||||||||
Series 2 | Stage 4 | Duyunian | 509 | |||||||||||
Toyonian | 510 * | |||||||||||||
Botomian | 512.5 * | |||||||||||||
Stage 3 | Nangaoian | 514 | ||||||||||||
Atdabanian | 515.6 * | |||||||||||||
Terreneuvian | Stage 2 | Meishucunian | Tommotian | 521 | ||||||||||
525.5 | ||||||||||||||
Fortunian | 529 | |||||||||||||
Jinnigian | 530.7 | |||||||||||||
538.8 |