After Bowring, Grotzinger, Isachsen, Knoll, Pelechaty & Kolosov, 1993
Period |
Epoch |
Age |
ended: |
becan: |
|---|---|---|---|---|
C |
Late Cambrian |
Dolgellian |
505 Ma | not defined |
Festiniogian |
not defined | not defined | Maentwrogian |
not defined | not defined |
Middle Cambrian |
Menevian |
not defined | not defined | |
Solvan |
not defined | 520 Ma | ||
Early Cambrian |
Botomian |
520 Ma | 525 Ma | |
Atdabanian |
525 Ma | 527.5 Ma | ||
Tommotian |
527.5 Ma | 530 Ma | ||
Manykaian |
530 Ma | 544 Ma |
Reference(s):
- Bowring, S. A., Grotzinger, J. P., Isachsen, C. E., Knoll, A. H., Pelechaty, S. M. & Kolosov, P., 1993: Calibrating rates of Early Cambrian evolution.
–Science: Vol. 261, 3 September, pp. 1293-1298