538.8 - 509 Ma

The definition of this interval in the timescale Cambrian Epochs is taken from the following source:

• F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view

There are intervals in 6 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Stage 4 age, Series 2 epoch, Terreneuvian epoch, Fortunian age, Stage 2 age, Stage 3 age
• Cambrian of China: Duyunian age, Jinnigian age, Meishucunian age, Nangaoian age
• Cambrian of Australia: Ordian age
• Cambrian of Siberia: Amgan age, Solvan age, Nemakit-Daldynian age, Tommotian age, Atdabanian age, Lenian age, Toyonian age, Botomian age
• Cambrian of North America: Dyeran age, Waucoban age, Montezuman age, Begadean age, Delamaran age
• Cambrian of West Avalonia: Branchian age, Placentian age

This interval is used in the definition of 248 collections

A total of 3051 collections with 20886 occurrences lie within this time span