497 - 486.85 Ma

The definition of this interval in the timescale Cambrian of North America 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

There are intervals in 9 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Paibian age, Furongian epoch, Jiangshanian age, Stage 10 age
• Cambrian Epochs: Late Cambrian epoch
• Ordovician of North America: Ibexian epoch, Skullrockian age
• Cambrian of China: Waergangian age, Youshuanian age, Niuchehean age, Taoyuanian age
• Cambrian of Australia: Idamean age, Iverian age, Datsonian age, Payntonian age
• Cambrian of Siberia: Ensyan age, Tavgian age, Sakian age, Yurakian age, Nganasanian age, Batyrbaian age, Maduan age, Aksaian age, Ketyan age
• Cambrian of North America: Millardan age, Sunwaptan age, Franconian age, Steptoean age
• Cambrian of West Avalonia: Arcadian age
• Cambrian of Britain: Trempealeauan age, Merioneth age, Maentwrogian age, Dolgellian age, Festiniogian age

This interval is no longer in current use

This interval is used in the definition of 158 collections

A total of 2636 collections with 13108 occurrences lie within this time span