500.5 - 497 Ma

The definition of this interval in the timescale International Chronostratigraphic Timescale is taken from the following source:

• K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view

There are intervals in 8 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Miaolingian epoch
• Obsolete Names for ICS Units: Series 3 epoch
• Cambrian Epochs: Middle Cambrian epoch
• Cambrian of China: Wangcunian age
• Cambrian of Australia: Boomerangian age, Mindyallan age
• Cambrian of Siberia: Mayan age, Ayusokkanian age, Menevian age
• Cambrian of North America: Albertian age, Marjumian age
• Cambrian of West Avalonia: Arcadian age

This interval is used in the definition of 378 collections

A total of 437 collections with 2940 occurrences lie within this time span