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Intervals
Macrostrat
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Irenian
1777
Type
Age
Age range
276.05–274.37
Ma
International Timescale
Guadalupian
Roadian
Cisuralian
Kungurian
Russian Platform Regional Stages
Sokian
Irenian
Flippovian
276.1
276.0
275.9
275.8
275.7
275.6
275.5
275.4
275.3
275.2
275.1
275.0
274.9
274.8
274.7
274.6
274.5
274.4
274.3
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