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Category Value
Timescale Eras Cenozoic
Timescale Eras Eoarchean
Timescale Eras Mesoarchean
Timescale Eras Mesoproterozoic
Timescale Eras Mesozoic
Timescale Eras Neoarchean
Timescale Eras Neoproterozoic
Timescale Eras Paleoarchean
Timescale Eras Paleoproterozoic
Timescale Eras Paleozoic
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