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Intervals
Macrostrat
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Missourian
138
Type
Age
Age range
306–303.7
Ma
International Timescale
Pennsylvanian
Gzhelian
Kasimovian
Custom COSUNA
Virgilian
Missourian
Desmoinesian
COSUNA
Virgilian
Missourian
Desmoinesian
North American Regional
Virgilian
Missourian
Desmoinesian
306.1
306.0
305.9
305.8
305.7
305.6
305.5
305.4
305.3
305.2
305.1
305.0
304.9
304.8
304.7
304.6
304.5
304.4
304.3
304.2
304.1
304.0
303.9
303.8
303.7
303.6
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