Lexicon
Intervals
Macrostrat
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Ufimian
403
Type
Age
Age range
276–274.4
Ma
International Timescale
Guadalupian
Roadian
Cisuralian
Kungurian
Russian Stages
Kazanian
Kungurian
Ufimian
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
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