486.85 - 477.1 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 8 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Early Ordovician epoch
• Ordovician of Britain: Migneintian age, Tremadoc epoch, Cressagian age
• Ordovician of the Baltic: Varangu age, Pakerort age, Hunneberg age, Oeland epoch, Latorp age
• Ordovician of Australia: Warendian age, Lancefieldian age
• Ordovician of China: Hunjiang age, Ningkuo age, Daobaowan age, Dawan age, Xinchangian age, Lianghekou age
• Ordovician of North America: Demingian age, Ibexian epoch, Canadian age, Jeffersonian age, Tulean age, Stairsian age, Gasconadian age, Skullrockian age, Cassinian age
• Cambrian of Siberia: Mansian age
• Cambrian of Kazakhstan: Ungurian age

This interval is used in the definition of 416 collections

A total of 2574 collections with 11496 occurrences lie within this time span