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
- 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
- J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 view
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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 126764 collections
| International Chronostratigraphic Timescale | Obsolete Precambrian Ages | Paleogene Mammal Ages of Asia | Ordovician of China | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phanerozoic | Cenozoic | Paleogene | Oligocene | Chattian | Tabenbulakian | Hsandagolian | 23.03 | |||||
| Rupelian | Kekeamuan | 27.82 | ||||||||||
| Eocene | Priabonian | Houldjinian/Ergilian/Ulangochuian | 33.9 | |||||||||
| Bartonian | Sharamurunian/Irdinmanhan/Arshantan | 37.71 | ||||||||||
| Lutetian | 41.2 | |||||||||||
| Ypresian | Bumbanian | 47.8 | ||||||||||
| Paleocene | Thanetian | Gashatan | 56 | |||||||||
| Selandian | 59.2 | |||||||||||
| Danian | 61.6 | |||||||||||
| Mesozoic | 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 | |||||||||||
| Paleozoic | 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 | 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 | Xinchangian | 477.7 | ||||||||||
| Lianghekou † | 477.9 * | |||||||||||
| Cambrian | Furongian | Stage 10 | 485.4 | |||||||||
| Jiangshanian | 489.5 | |||||||||||
| Paibian | 494 | |||||||||||
| Miaolingian | Guzhangian | 497 | ||||||||||
| Drumian | 500.5 | |||||||||||
| Wuliuan | 504.5 | |||||||||||
| Series 2 | Stage 4 | 509 | ||||||||||
| Stage 3 | 514 | |||||||||||
| Terreneuvian | Stage 2 | 521 | ||||||||||
| Fortunian | 529 | |||||||||||
| Proterozoic | Neoproterozoic | Ediacaran | Vendian † | Poundian † | 538.8 | |||||||
| Wonokan † | 571.7 * | |||||||||||
| 635 | ||||||||||||