Ordovician of Australia

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
  • 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
  • D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
  • F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view

There are 9 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 379 collections

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International Chronostratigraphic TimescaleOrdovician of AustraliaCambrian of KazakhstanOrdovician of the BalticOrdovician of North AmericaCambrian of Siberia
OrdovicianLate OrdovicianHirnantianBolindianHarjuPorkuniCincinnatianGamachian443.8
KatianPirgu445.2
Richmondian446 *
Eastonian449 *
Vormsi449.6 *
MaysvillianRocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian449.8 *
NabalaJohvi †450 *
Edenian450.4 *
ViruRakvere450.6 *
MohawkianChatfieldian451.1 *
GisbornianOandu452 *
SandbianKeilaIdavere †453
Turinian453.7 *
Haljala453.9
Kukruse456.4 *
WhiterockianCanadian †Chazyan †/Marmor457 *
UhakuAluoja †457.5 *
Middle OrdovicianDarriwilianDarriwilian458.4
Lasnamagi458.9 *
Aseri460.4 *
OelandKunda462.9 *
Valaste †/Hunderum464.3 *
VolkhovLangevoja †/Vaana/Saka467.1 *
DapingianYapeenian467.3
Castlemainian468.5 *
Rangerian469.1 *
Billingen469.3 *
Early OrdovicianFloianChewtonianIbexianBlackhillsianJeffersonian †Cassinian †470
Latorp †470.1 *
Bendigonian471.8 *
Lancefieldian473.5 *
Hunneberg473.7 *
Tulean473.9 *
TremadocianUngurian477.7
Stairsian480.3 *
Varangu481.3 *
SkullrockianDemingian †482 *
Pakerort482.2 *
Warendian482.8 *
Mansian †483.55 *
CambrianFurongianStage 10BatyrbaianBatyrbaianTavgian †Ketyan †/Yurakian485.4
486.3 *
486.5
487.5
Jiangshanian489.5
AksaianAksaian490.7 *
SakianSakian492.2 *
Paibian494
Ensyan †/Maduan/Nganasanian494.7 *
MiaolingianGuzhangianAyusokkanianAyusokkanian497
Mayan/Menevian499.5
DrumianZhanaarykian500.5
Tuesaian503
WuliuanAmgan/Solvan504.5
505.3
Series 2Stage 4509
ToyonianToyonianLenian †510 *
BotomianBotomian512.5 *
Stage 3514
AtdabanianAtdabanian515.6 *
TerreneuvianStage 2TommotianTommotian521
Nemakit-Daldynian525.5
FortunianManykaian †529
538.8