Lexicon
Intervals
Macrostrat
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Castlemainian
1008
Type
Age
Age range
471.3–470.2
Ma
International Timescale
Middle Ordovician
Dapingian
Early Ordovician
Floian
New Zealand Ages
Yapeenian
Castlemainian
Chewtonian
Australian Regional
Yapeenian
Castlemainian
Chewtonian
471.3
471.3
471.2
471.1
471.1
471.1
471.0
470.9
470.9
470.9
470.8
470.8
470.7
470.6
470.6
470.6
470.5
470.4
470.4
470.4
470.3
470.3
470.2
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