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Burtsevian
1772
Type
Age
Age range
290.51–288
Ma
International Timescale
Cisuralian
Artinskian
Sakmarian
Russian Platform Regional Stages
Irginian
Burtsevian
Sterlitamakian
290.6
290.4
290.2
290.0
289.8
289.6
289.4
289.2
289.0
288.8
288.6
288.4
288.2
288.0
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