489.2 - 485.4 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 9 timescales which overlap this one. show

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

This interval is used in the definition of 29 collections

A total of 480 collections with 2296 occurrences lie within this time span