497 - 492.2 Ma

The definition of this interval in the timescale Cambrian of Siberia 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

The top age has been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.

There are intervals in 7 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Furongian epoch, Jiangshanian age, Paibian age
• Cambrian Epochs: Late Cambrian epoch
• Cambrian of China: Taoyuanian age, Waergangian age, Youshuanian age
• Cambrian of Australia: Idamean age, Iverian age
• Cambrian of Siberia: Tavgian age, Nganasanian age, Maduan age, Ensyan age, Yurakian age, Ketyan age
• Cambrian of North America: Millardan age, Steptoean age, Sunwaptan age, Franconian age, Dresbachian age
• Cambrian of Britain: Maentwrogian age

This interval is used in the definition of 63 collections

A total of 475 collections with 2622 occurrences lie within this time span