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 4549 collections

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International Chronostratigraphic TimescaleOrdovician of BritainOrdovician of Ibero-BohemiaCambrian of AustraliaCambrian of ChinaOrdovician of ChinaCambrian of BritainCambrian of KazakhstanCambrian of North AmericaCambrian Epochs
OrdovicianLate OrdovicianHirnantianAshgillHirnantianKosovianHirnantianXiaoxita †/ShikouWufeng †443.8
KatianRawtheyanKralodvorianBohdalec †Chientangkiangian445.2
Cautleyan448.9 *
Pusgillian449.3 *
Neichianshanian/Hanjiang449.5
CaradocStreffordianOnnian †449.6 *
Berounian449.7 *
Cheneyan451.5 *
Burrellian452.7 *
Sandbian453
Actonian †453.2 *
Marshbrookian †Woolstonian †454.2 *
Longvillian †455.2 *
Zahorany †/ViniceLetna †456.2 *
Aurelucian456.8 *
Soudleyan †/Harnagian/Costonian457.4 *
Liben †458 *
Middle OrdovicianDarriwilianLlanvirnLlandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late LlanvirnDarriwilianGuniu †/Hulo458.4
Dobrotivian458.5 *
Oretanian459.7 *
Abereiddian/Early Llanvirn461.3 *
Sarka †461.7 *
Hunjiang †Dawan †/Daobaowan/Ningkuo466.3 *
DapingianKlabava †Dapingian467.3
Arenigian468
ArenigFennian468.4 *
Early OrdovicianFloianYiyangian470
Whitlandian471.1 *
Moridunian474.3 *
TremadocianTremadocMigneintianTremadocianXinchangianUngurian477.7
Lianghekou †477.9 *
Cressagian480.8 *
485 *
CambrianFurongianStage 10DatsonianNiucheheanTaoyuanian †MerionethDolgellian/TrempealeauanBatyrbaianFranconian †/Dresbachian/MillardanLate Cambrian485.4
Payntonian486.8 *
Sunwaptan487.5
Festiniogian489.2 *
JiangshanianIverianJiangshanian489.5
Aksaian490.7 *
Sakian492.2 *
Steptoean493 *
Maentwrogian493.1 *
PaibianIdameanPaibian494
Waergangian †/Youshuanian494.9 *
MiaolingianGuzhangianMindyallanGuzhangianWangcunian †St DavidsAyusokkanianMarjumianAlbertian †Middle Cambrian497
Boomerangian499
499.5
DrumianUndillanDrumianZhanaarykian500.5
FloranTuesaian503
WuliuanTempletonianWuliuan/TaijangianTopazan504.5
505.3
Delamaran506.5
Ordian507.8 *
Series 2Stage 4DuyunianCaerfaiWaucoban †Early Cambrian509
Toyonian510 *
510.8 *
Dyeran511 *
Botomian512.5 *
Stage 3Nangaoian514
Montezuman514.8 *
Atdabanian515.6 *
Begadean519.9 *
TerreneuvianStage 2MeishucunianTommotian521
525.5
Fortunian529
Jinnigian530.7
538.8