Type
Age
Age range
320–318.5 Ma

International Timescale

Pennsylvanian
Bashkirian

Russian Platform Regional Stages

Cheremshanian
Prikamian
Severokeltmian
320.0319.9319.8319.7319.6319.5319.4319.3319.2319.1319.0318.9318.8318.7318.6318.5

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