Ordovician of Britain

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

  • 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
  • B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
  • F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view

There are 14 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 4547 collections

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International Chronostratigraphic TimescaleOrdovician of BritainOrdovician of AustraliaCambrian of AustraliaOrdovician of the BalticCambrian of ChinaCambrian Epochs
OrdovicianLate OrdovicianHirnantianAshgillHirnantianBolindianHarjuPorkuni443.8
KatianRawtheyanPirgu445.2
Cautleyan448.9 *
Eastonian449 *
Pusgillian449.3 *
CaradocStreffordianOnnian †Vormsi449.6 *
NabalaJohvi †450 *
ViruRakvere450.6 *
Cheneyan451.5 *
GisbornianOandu452 *
Burrellian452.7 *
SandbianKeilaIdavere †453
Actonian †453.2 *
Haljala453.9
Marshbrookian †Woolstonian †454.2 *
Longvillian †455.2 *
Kukruse456.4 *
Aurelucian456.8 *
Soudleyan †/Harnagian/Costonian457.4 *
UhakuAluoja †457.5 *
Middle OrdovicianDarriwilianLlanvirnLlandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late LlanvirnDarriwilian458.4
Lasnamagi458.9 *
Aseri460.4 *
Abereiddian/Early Llanvirn461.3 *
OelandKunda462.9 *
Valaste †/Hunderum464.3 *
VolkhovLangevoja †/Vaana/Saka467.1 *
DapingianYapeenian467.3
ArenigFennian468.4 *
Castlemainian468.5 *
Billingen469.3 *
Early OrdovicianFloianChewtonian470
Latorp †470.1 *
Whitlandian471.1 *
Bendigonian471.8 *
Lancefieldian473.5 *
Hunneberg473.7 *
Moridunian474.3 *
TremadocianTremadocMigneintian477.7
Cressagian480.8 *
Varangu481.3 *
Pakerort482.2 *
Warendian482.8 *
485 *
CambrianFurongianStage 10DatsonianNiucheheanTaoyuanian †Late Cambrian485.4
486.3 *
486.5
Payntonian486.8 *
JiangshanianIverianJiangshanian489.5
PaibianIdameanPaibian494
Waergangian †/Youshuanian494.9 *
MiaolingianGuzhangianMindyallanGuzhangianWangcunian †Middle Cambrian497
Boomerangian499
DrumianUndillanDrumian500.5
Floran503
WuliuanTempletonianWuliuan/Taijangian504.5
Ordian507.8 *
Series 2Stage 4DuyunianEarly Cambrian509
510.8 *
Stage 3Nangaoian514
TerreneuvianStage 2Meishucunian521
Fortunian529
Jinnigian530.7
538.8