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
- M. Freudenthal. 2006. Mammal Paleogene zones. personal communication view
- J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) view
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
There are 59 timescales which overlap this one. show
Interval names marked with † are no longer in current use.
This timescale is used in the definition of 126699 collections
| International Chronostratigraphic Timescale | Obsolete Names for ICS Units | Cambrian of West Avalonia | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cambrian | Furongian | Stage 10 | 485.4 | ||||||
| Jiangshanian | 489.5 | ||||||||
| Paibian | 494 | ||||||||
| Miaolingian | Guzhangian | Series 3 † | 497 | ||||||
| Arcadian | 498.4 | ||||||||
| Drumian | 500.5 | ||||||||
| Wuliuan | Stage 5 † | 504.5 | |||||||
| Series 2 | Stage 4 | Branchian | 509 | ||||||
| Stage 3 | 514 | ||||||||
| Placentian | 517.1 | ||||||||
| Terreneuvian | Stage 2 | 521 | |||||||
| Fortunian | 529 | ||||||||
| 538.8 | |||||||||