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Intervals
Macrostrat
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Maysvillian
161
Type
Age
Age range
450–449
Ma
International Timescale
Late Ordovician
Katian
COSUNA
Richmondian
Maysvillian
Edenian
North American Regional
Richmondian
Maysvillian
Edenian
450.0
449.9
449.9
449.9
449.8
449.8
449.7
449.6
449.6
449.6
449.5
449.4
449.4
449.4
449.3
449.3
449.2
449.1
449.1
449.1
449.0
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