477.7 - 470 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. 2023. The ICS International Chronostratigraphic Chart v2023/09. view

There are intervals in 7 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Early Ordovician epoch
• Ordovician of Britain: Moridunian age, Whitlandian age, Fennian age, Arenig epoch
• Ordovician of the Baltic: Hunneberg age, Valaste age, Latorp age, Saka age, Vaana age, Langevoja age, Billingen age, Oeland epoch, Hunderum age
• Ordovician of Ibero-Bohemia: Arenigian age, Klabava age
• Ordovician of Australia: Chewtonian age, Bendigonian age, Lancefieldian age
• Ordovician of China: Daobaowan age, Dawan age, Hunjiang age, Ningkuo age, Yiyangian age
• Ordovician of North America: Blackhillsian age, Canadian age, Cassinian age, Tulean age, Ibexian epoch, Jeffersonian age

This interval is used in the definition of 306 collections

A total of 2268 collections with 11359 occurrences lie within this time span