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
  • B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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 ChinaCambrian of KazakhstanCambrian of SiberiaCambrian of West AvaloniaCambrian of BritainOrdovician of North AmericaOrdovician of the Baltic
OrdovicianLate OrdovicianHirnantianCincinnatianGamachianHarjuPorkuni443.8
KatianPirgu445.2
Richmondian446 *
Vormsi449.6 *
MaysvillianRocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian449.8 *
NabalaJohvi †450 *
Edenian450.4 *
ViruRakvere450.6 *
MohawkianChatfieldian451.1 *
Oandu452 *
SandbianKeilaIdavere †453
Turinian453.7 *
Haljala453.9
Kukruse456.4 *
WhiterockianCanadian †Chazyan †/Marmor457 *
UhakuAluoja †457.5 *
Middle OrdovicianDarriwilian458.4
Lasnamagi458.9 *
Aseri460.4 *
OelandKunda462.9 *
Valaste †/Hunderum464.3 *
VolkhovLangevoja †/Vaana/Saka467.1 *
Dapingian467.3
Rangerian469.1 *
Billingen469.3 *
Early OrdovicianFloianIbexianBlackhillsianJeffersonian †Cassinian †470
Latorp †470.1 *
Hunneberg473.7 *
Tulean473.9 *
TremadocianUngurian477.7
Stairsian480.3 *
Varangu481.3 *
SkullrockianDemingian †482 *
Pakerort482.2 *
Mansian †483.55 *
CambrianFurongianStage 10Late CambrianNiucheheanTaoyuanian †BatyrbaianBatyrbaianTavgian †Ketyan †/YurakianMerionethDolgellian/Trempealeauan485.4
486.3 *
486.5
487.5
Festiniogian489.2 *
JiangshanianJiangshanian489.5
AksaianAksaian490.7 *
SakianSakian492.2 *
Maentwrogian493.1 *
PaibianPaibian494
Ensyan †/Maduan/Nganasanian494.7 *
Waergangian †/Youshuanian494.9 *
MiaolingianGuzhangianMiddle CambrianGuzhangianWangcunian †AyusokkanianAyusokkanianSt Davids497
Arcadian498.4
Mayan/Menevian499.5
DrumianDrumianZhanaarykian500.5
Tuesaian503
WuliuanWuliuan/TaijangianAmgan/Solvan504.5
505.3
Series 2Stage 4Early CambrianDuyunianBranchianCaerfai509
ToyonianToyonianLenian †510 *
BotomianBotomian512.5 *
Stage 3Nangaoian514
AtdabanianAtdabanian515.6 *
Placentian517.1
TerreneuvianStage 2MeishucunianTommotianTommotian521
Nemakit-Daldynian525.5
FortunianManykaian †529
Jinnigian530.7
538.8