497 - 493.1 Ma

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

• W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. 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 6 timescales which overlap this one. show

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

This interval is used in the definition of 23 collections

A total of 477 collections with 2667 occurrences lie within this time span