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
- A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 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
- J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 view
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
- J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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 | Obsolete Names for ICS Units | Ordovician of the Baltic | Cambrian Epochs | Cambrian of West Avalonia | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
462.9 | ||||||||||||||
482.2 | ||||||||||||||
Cambrian | Furongian | Stage 10 | Oeland | Pakerort | Late Cambrian | 485.4 * | ||||||||
486.3 * | ||||||||||||||
486.5 | ||||||||||||||
Jiangshanian | 489.5 | |||||||||||||
Paibian | 494 | |||||||||||||
Miaolingian | Guzhangian | Series 3 † | Middle Cambrian | 497 | ||||||||||
Arcadian | 498.4 | |||||||||||||
Drumian | 500.5 | |||||||||||||
Wuliuan | Stage 5 † | 504.5 | ||||||||||||
Series 2 | Stage 4 | Early Cambrian | Branchian | 509 | ||||||||||
Stage 3 | 514 | |||||||||||||
Placentian | 517.1 | |||||||||||||
Terreneuvian | Stage 2 | 521 | ||||||||||||
Fortunian | 529 | |||||||||||||
538.8 |