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
- 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
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 126144 collections
International Chronostratigraphic Timescale | Cambrian of Kazakhstan | Obsolete Carboniferous Ages of China | Permian of China | Carboniferous Subepochs | Cambrian of West Avalonia | ||||
---|---|---|---|---|---|---|---|---|---|
Quaternary | Holocene | Meghalayan | 0 | ||||||
Northgrippian | 0.0042 | ||||||||
Greenlandian | 0.0082 | ||||||||
Pleistocene | Late Pleistocene | 0.0117 | |||||||
Chibanian | 0.129 | ||||||||
Calabrian | 0.774 | ||||||||
Gelasian | 1.8 | ||||||||
Neogene | Pliocene | Piacenzian | 2.58 | ||||||
Zanclean | 3.6 | ||||||||
Miocene | Messinian | 5.333 | |||||||
Tortonian | 7.246 | ||||||||
Serravallian | 11.63 | ||||||||
Langhian | 13.82 | ||||||||
Burdigalian | 15.98 | ||||||||
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 | Meishanian | 251.902 | |||||
Baoqingian | 253.4 * | ||||||||
Wuchiapingian | Laoshanian | 254.14 | |||||||
Laibinian | 257.7 * | ||||||||
Guadalupian | Capitanian | Lengwuan | 259.51 | ||||||
Wordian | Kuhfengian | 264.28 | |||||||
Roadian | 266.9 | ||||||||
Cisuralian | Kungurian | Luodianian | 273.01 | ||||||
Artinskian | 283.5 | ||||||||
Longlinian | 285.4 * | ||||||||
Sakmarian | 290.1 | ||||||||
Asselian | Zisongian | 293.52 | |||||||
Carboniferous | Pennsylvanian | Gzhelian | Mapingian † | Late Pennsylvanian | 298.9 | ||||
300.1 | |||||||||
Kasimovian | 303.7 | ||||||||
305.9 | |||||||||
Moscovian | Middle Pennsylvanian | 307 | |||||||
Bashkirian | Early Pennsylvanian | 315.2 | |||||||
Mississippian | Serpukhovian | Late Mississippian | 323.2 | ||||||
Visean | Middle Mississippian | 330.9 | |||||||
Tournaisian | Early Mississippian | 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 | 443.8 | ||||||
Katian | 445.2 | ||||||||
Sandbian | 453 | ||||||||
Middle Ordovician | Darriwilian | 458.4 | |||||||
Dapingian | 467.3 | ||||||||
Early Ordovician | Floian | 470 | |||||||
Tremadocian | Ungurian | 477.7 | |||||||
Cambrian | Furongian | Stage 10 | Batyrbaian | 485.4 | |||||
Jiangshanian | 489.5 | ||||||||
Aksaian | 490.7 * | ||||||||
Sakian | 492.2 * | ||||||||
Paibian | 494 | ||||||||
Miaolingian | Guzhangian | Ayusokkanian | 497 | ||||||
Arcadian | 498.4 | ||||||||
499.5 | |||||||||
Drumian | Zhanaarykian | 500.5 | |||||||
Tuesaian | 503 | ||||||||
Wuliuan | 504.5 | ||||||||
505.3 | |||||||||
Series 2 | Stage 4 | Branchian | 509 | ||||||
Toyonian | 510 * | ||||||||
Botomian | 512.5 * | ||||||||
Stage 3 | 514 | ||||||||
Atdabanian | 515.6 * | ||||||||
Placentian | 517.1 | ||||||||
Terreneuvian | Stage 2 | Tommotian | 521 | ||||||
525.5 | |||||||||
Fortunian | 529 | ||||||||
538.8 |