517.1 - 509 Ma

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

• F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view

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

• International Chronostratigraphic Timescale: Stage 3 age, Series 2 epoch, Stage 4 age
• Cambrian Epochs: Early Cambrian epoch
• Cambrian of China: Nangaoian age, Duyunian age
• Cambrian of Australia: Ordian age
• Cambrian of Siberia: Botomian age, Toyonian age, Lenian age, Atdabanian age, Amgan age, Solvan age
• Cambrian of North America: Delamaran age, Montezuman age, Waucoban age, Dyeran age

This interval is used in the definition of 31 collections

A total of 1168 collections with 8172 occurrences lie within this time span