Cambrian Time Slices
Cambrian 1
Cambrian 1: early Cambrian (international stages of Fortunian through Stage 4) (about 542-511 million years)
Cambrian 2: Australian stage of Ordian (international stages of latest Stage 4 and early Stage 5) (about 511-509 million years)
Cambrian 3: Australian stage of Templetonian (international stages of middle and late Stage 5) (about 509-506 million years)
Cambrian 4: Australian stages of Floran and Undillan (international stages of early and middle Drumian) (about 506-504 million years)
Cambrian 5: Australian stages of Boomerangian and Mindyallian (international stages of late Drumian through Guzhangian) (about 504-499 million years)
Cambrian 6: Furongian Series (about 499-488 million years)