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Protvian
1748
Type
Age
Age range
327–324.5
Ma
International Timescale
Mississippian
Serpukhovian
Russian Platform Regional Stages
Zapaltjubian
Protvian
Steshevian
327.0
326.8
326.6
326.4
326.2
326.0
325.8
325.6
325.4
325.2
325.0
324.8
324.6
324.4
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