497 - 485.4 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: Stage 10 age, Jiangshanian age, Furongian epoch, Paibian age
• Cambrian Epochs: Late Cambrian epoch
• Ordovician of the Baltic: Oeland epoch, Pakerort age
• Ordovician of North America: Ibexian epoch, Skullrockian age
• Cambrian of China: Taoyuanian age, Youshuanian age, Waergangian age, Niuchehean age
• Cambrian of Australia: Datsonian age, Payntonian age, Iverian age, Idamean age
• Cambrian of Siberia: Batyrbaian age, Sakian age, Tavgian age, Ensyan age, Nganasanian age, Ketyan age, Yurakian age, Aksaian age, Maduan age
• Cambrian of North America: Sunwaptan age, Franconian age, Steptoean age, Millardan age
• Cambrian of Britain: Maentwrogian age, Trempealeauan age, Dolgellian age

This interval is no longer in current use

This interval is used in the definition of 159 collections

A total of 2466 collections with 12570 occurrences lie within this time span