486.85 - 471.3 Ma

The definition of this interval in the timescale International Chronostratigraphic Timescale is taken from the following source:

• K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2024. The ICS International Chronostratigraphic Chart v2024/12. International Commission on Stratigraphy view

There are intervals in 9 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Tremadocian age, Floian age
• Ordovician of Britain: Arenig epoch, Moridunian age, Migneintian age, Whitlandian age, Tremadoc epoch, Cressagian age
• Ordovician of the Baltic: Hunneberg age, Varangu age, Valaste age, Pakerort age, Vaana age, Billingen age, Hunderum age, Saka age, Latorp age, Langevoja age, Oeland epoch
• Ordovician of Ibero-Bohemia: Klabava age, Arenigian age
• Ordovician of Australia: Bendigonian age, Warendian age, Lancefieldian age, Chewtonian age
• Ordovician of China: Ningkuo age, Daobaowan age, Yiyangian age, Hunjiang age, Lianghekou age, Xinchangian age, Dawan age
• Ordovician of North America: Cassinian age, Tulean age, Demingian age, Gasconadian age, Canadian age, Skullrockian age, Ibexian epoch, Blackhillsian age, Jeffersonian age, Stairsian age
• Cambrian of Siberia: Mansian age
• Cambrian of Kazakhstan: Ungurian age

This interval is used in the definition of 95 collections

A total of 4138 collections with 19881 occurrences lie within this time span