477.1 - 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 7 timescales which overlap this one. show

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

This interval is used in the definition of 311 collections

A total of 1465 collections with 7816 occurrences lie within this time span