490.2 - 486.85 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 bottom 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 8 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Furongian epoch, Stage 10 age
• Cambrian Epochs: Late Cambrian epoch
• Ordovician of North America: Skullrockian age, Ibexian epoch
• Cambrian of China: Taoyuanian age, Niuchehean age
• Cambrian of Australia: Payntonian age, Datsonian age
• Cambrian of Siberia: Batyrbaian age, Yurakian age, Ketyan age, Tavgian age
• Cambrian of North America: Millardan age, Franconian age, Sunwaptan age, Dresbachian age
• Cambrian of Britain: Dolgellian age, Merioneth age

This interval is used in the definition of 232 collections

A total of 490 collections with 2352 occurrences lie within this time span