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