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
  • 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
  • D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
  • M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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.

Interval names marked with † are no longer in current use.

This timescale is used in the definition of 594 collections

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International Chronostratigraphic TimescaleCambrian EpochsCambrian of AustraliaCambrian of SiberiaCambrian of North AmericaCambrian of West AvaloniaOrdovician of North AmericaCambrian of Kazakhstan
OrdovicianLate OrdovicianHirnantianCincinnatianGamachian443.8
Katian445.2
Richmondian446 *
MaysvillianRocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian449.8 *
Edenian450.4 *
MohawkianChatfieldian451.1 *
Sandbian453
Turinian453.7 *
WhiterockianCanadian †Chazyan †/Marmor457 *
Middle OrdovicianDarriwilian458.4
Dapingian467.3
Rangerian469.1 *
Early OrdovicianFloianIbexianBlackhillsianJeffersonian †Cassinian †470
Tulean473.9 *
TremadocianUngurian477.7
Stairsian480.3 *
SkullrockianDemingian †482 *
Mansian †483.55 *
CambrianFurongianStage 10Late CambrianDatsonianBatyrbaianTavgian †Ketyan †/YurakianFranconian †/Dresbachian/MillardanBatyrbaian485.4
Payntonian486.8 *
Sunwaptan487.5
JiangshanianIverian489.5
AksaianAksaian490.7 *
SakianSakian492.2 *
Steptoean493 *
PaibianIdamean494
Ensyan †/Maduan/Nganasanian494.7 *
MiaolingianGuzhangianMiddle CambrianMindyallanAyusokkanianMarjumianAlbertian †Ayusokkanian497
Arcadian498.4
Boomerangian499
Mayan/Menevian499.5
DrumianUndillanZhanaarykian500.5
FloranTuesaian503
WuliuanTempletonianAmgan/SolvanTopazan504.5
505.3
Delamaran506.5
Ordian507.8 *
Series 2Stage 4Early CambrianWaucoban †Branchian509
ToyonianLenian †Toyonian510 *
510.8 *
Dyeran511 *
BotomianBotomian512.5 *
Stage 3514
Montezuman514.8 *
AtdabanianAtdabanian515.6 *
Placentian517.1
Begadean519.9 *
TerreneuvianStage 2TommotianTommotian521
Nemakit-Daldynian525.5
FortunianManykaian †529
538.8