Cambrian Epochs

The interval definitions in this timescale are derived from the following sources:

  • F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
  • F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view

There are 12 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.

This timescale is used in the definition of 594 collections

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International Chronostratigraphic TimescaleCambrian EpochsCambrian of KazakhstanCambrian of West AvaloniaCambrian of Australia
OrdovicianEarly OrdovicianTremadocianUngurian477.7
CambrianFurongianStage 10Late CambrianBatyrbaianDatsonian485.4
Payntonian486.8 *
JiangshanianIverian489.5
Aksaian490.7 *
Sakian492.2 *
PaibianIdamean494
MiaolingianGuzhangianMiddle CambrianAyusokkanianMindyallan497
Arcadian498.4
Boomerangian499
499.5
DrumianZhanaarykianUndillan500.5
TuesaianFloran503
WuliuanTempletonian504.5
505.3
Ordian507.8 *
Series 2Stage 4Early CambrianBranchian509
Toyonian510 *
510.8 *
Botomian512.5 *
Stage 3514
Atdabanian515.6 *
Placentian517.1
TerreneuvianStage 2Tommotian521
525.5
Fortunian529
538.8