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
- A. D. Barnosky, M. Holmes, R. Kirchholtes, E. Lindsey, K.C. Maguire, A.W. Poust, M.A. Stegner, J. Sunseri, B. Swartz, J. Swift, N.A. Villavicencio and G. Wogan. 2014. Prelude to the Anthropocene: Two new North American Land Mammal Ages (NALMAs). The Anthropocene Review I(3):225-242 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.
This timescale is used in the definition of 126691 collections
| International Chronostratigraphic Timescale | Cambrian of Kazakhstan | Cambrian of West Avalonia | Devonian Subages | North American Land Mammal Ages | |||
|---|---|---|---|---|---|---|---|
| Quaternary | Holocene | Meghalayan | Saintaugustinean | 0 | |||
| Santarosean | 0.0004 | ||||||
| Northgrippian | 0.0042 | ||||||
| Greenlandian | 0.0082 | ||||||
| Pleistocene | Late Pleistocene | 0.0117 | |||||
| Rancholabrean | 0.014 | ||||||
| Chibanian | 0.129 | ||||||
| Irvingtonian | 0.21 | ||||||
| Calabrian | 0.774 | ||||||
| Blancan | 1.4 | ||||||
| Gelasian | 1.8 | ||||||
| Neogene | Pliocene | Piacenzian | 2.58 | ||||
| Zanclean | 3.6 | ||||||
| Hemphillian | 4.7 | ||||||
| Miocene | Messinian | 5.333 | |||||
| Tortonian | 7.246 | ||||||
| Clarendonian | 9.4 | ||||||
| Serravallian | 11.63 | ||||||
| Barstovian | 12.5 | ||||||
| Langhian | 13.82 | ||||||
| Burdigalian | 15.98 | ||||||
| Hemingfordian | 16.3 | ||||||
| Arikareean | 18.5 | ||||||
| Aquitanian | 20.44 | ||||||
| Paleogene | Oligocene | Chattian | 23.03 | ||||
| Rupelian | 27.82 | ||||||
| Whitneyan | 29.5 | ||||||
| Orellan | 31.8 | ||||||
| Eocene | Priabonian | Chadronian | 33.9 | ||||
| Duchesnean | 37 | ||||||
| Bartonian | 37.71 | ||||||
| Uintan | 39.7 | ||||||
| Lutetian | 41.2 | ||||||
| Bridgerian | 46.2 | ||||||
| Ypresian | 47.8 | ||||||
| Wasatchian | 50.5 | ||||||
| Clarkforkian | 54.9 | ||||||
| Paleocene | Thanetian | 56 | |||||
| Tiffanian | 56.2 | ||||||
| Selandian | 59.2 | ||||||
| Torrejonian | 60.9 | ||||||
| Danian | 61.6 | ||||||
| Puercan | 63.8 | ||||||
| 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 | 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 | |||||||