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

This interval is used in the definition of 21 collections

A total of 467 collections with 2601 occurrences lie within this time span