Type
Period
Age range
1400–1200 Ma
Proterozoic
Mesoproterozoic
Stenian
Ectasian
Calymmian
1,4001,3901,3801,3701,3601,3501,3401,3301,3201,3101,3001,2901,2801,2701,2601,2501,2401,2301,2201,2101,200