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
  • 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 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 4548 collections

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International Chronostratigraphic TimescaleOrdovician of BritainOrdovician of ChinaCambrian of ChinaCambrian of SiberiaOrdovician of the BalticOrdovician of North AmericaOrdovician of Ibero-BohemiaCambrian Epochs
OrdovicianLate OrdovicianHirnantianAshgillHirnantianHirnantianXiaoxita †/ShikouWufeng †HarjuPorkuniCincinnatianGamachianKosovian443.8
KatianRawtheyanChientangkiangianPirguKralodvorianBohdalec †445.2
Richmondian446 *
Cautleyan448.9 *
Pusgillian449.3 *
Neichianshanian/Hanjiang449.5
CaradocStreffordianOnnian †Vormsi449.6 *
Berounian449.7 *
MaysvillianRocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian449.8 *
NabalaJohvi †450 *
Edenian450.4 *
ViruRakvere450.6 *
MohawkianChatfieldian451.1 *
Cheneyan451.5 *
Oandu452 *
Burrellian452.7 *
SandbianKeilaIdavere †453
Actonian †453.2 *
Turinian453.7 *
Haljala453.9
Marshbrookian †Woolstonian †454.2 *
Longvillian †455.2 *
Zahorany †/ViniceLetna †456.2 *
Kukruse456.4 *
Aurelucian456.8 *
WhiterockianCanadian †Chazyan †/Marmor457 *
Soudleyan †/Harnagian/Costonian457.4 *
UhakuAluoja †457.5 *
Liben †458 *
Middle OrdovicianDarriwilianLlanvirnLlandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late LlanvirnDarriwilianGuniu †/Hulo458.4
Dobrotivian458.5 *
Lasnamagi458.9 *
Oretanian459.7 *
Aseri460.4 *
Abereiddian/Early Llanvirn461.3 *
Sarka †461.7 *
OelandKunda462.9 *
Valaste †/Hunderum464.3 *
Hunjiang †Dawan †/Daobaowan/Ningkuo466.3 *
VolkhovLangevoja †/Vaana/Saka467.1 *
DapingianDapingianKlabava †467.3
Arenigian468
ArenigFennian468.4 *
Rangerian469.1 *
Billingen469.3 *
Early OrdovicianFloianYiyangianIbexianBlackhillsianJeffersonian †Cassinian †470
Latorp †470.1 *
Whitlandian471.1 *
Hunneberg473.7 *
Tulean473.9 *
Moridunian474.3 *
TremadocianTremadocMigneintianXinchangianTremadocian477.7
Lianghekou †477.9 *
Stairsian480.3 *
Cressagian480.8 *
Varangu481.3 *
SkullrockianDemingian †482 *
Pakerort482.2 *
Mansian †483.55 *
485 *
CambrianFurongianStage 10NiucheheanTaoyuanian †BatyrbaianTavgian †Ketyan †/YurakianLate Cambrian485.4
486.3 *
486.5
487.5
JiangshanianJiangshanian489.5
Aksaian490.7 *
Sakian492.2 *
PaibianPaibian494
Ensyan †/Maduan/Nganasanian494.7 *
Waergangian †/Youshuanian494.9 *
MiaolingianGuzhangianGuzhangianWangcunian †AyusokkanianMiddle Cambrian497
Mayan/Menevian499.5
DrumianDrumian500.5
WuliuanWuliuan/TaijangianAmgan/Solvan504.5
Series 2Stage 4DuyunianEarly Cambrian509
ToyonianLenian †510 *
Botomian512.5 *
Stage 3Nangaoian514
Atdabanian515.6 *
TerreneuvianStage 2MeishucunianTommotian521
Nemakit-Daldynian525.5
FortunianManykaian †529
Jinnigian530.7
538.8