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
- M. Freudenthal. 2006. Mammal Paleogene zones. personal communication view
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
- M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 view
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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 127017 collections
International Chronostratigraphic Timescale | Ordovician of the Baltic | Cambrian of Australia | Cambrian of Britain | Cambrian of North America | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
462.9 | ||||||||||||||
482.2 | ||||||||||||||
Cambrian | Furongian | Stage 10 | Oeland | Pakerort | Datsonian | Merioneth | Dolgellian/Trempealeauan | Franconian †/Dresbachian/Millardan | 485.4 * | |||||
486.3 * | ||||||||||||||
486.5 | ||||||||||||||
Payntonian | 486.8 * | |||||||||||||
Sunwaptan | 487.5 | |||||||||||||
Festiniogian | 489.2 * | |||||||||||||
Jiangshanian | Iverian | 489.5 | ||||||||||||
Steptoean | 493 * | |||||||||||||
Maentwrogian | 493.1 * | |||||||||||||
Paibian | Idamean | 494 | ||||||||||||
Miaolingian | Guzhangian | Mindyallan | St Davids | Marjumian | Albertian † | 497 | ||||||||
Boomerangian | 499 | |||||||||||||
Drumian | Undillan | 500.5 | ||||||||||||
Floran | 503 | |||||||||||||
Wuliuan | Templetonian | Topazan | 504.5 | |||||||||||
Delamaran | 506.5 | |||||||||||||
Ordian | 507.8 * | |||||||||||||
Series 2 | Stage 4 | Caerfai | Waucoban † | 509 | ||||||||||
510.8 * | ||||||||||||||
Dyeran | 511 * | |||||||||||||
Stage 3 | 514 | |||||||||||||
Montezuman | 514.8 * | |||||||||||||
Begadean | 519.9 * | |||||||||||||
Terreneuvian | Stage 2 | 521 | ||||||||||||
Fortunian | 529 | |||||||||||||
538.8 |