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

This interval is used in the definition of 249 collections

A total of 3042 collections with 20840 occurrences lie within this time span