Geologic Time Scale

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Can you name the Geologic Time Scale?

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Score 0/19 Timer 10:00
NumberPeriodInfo
4aiv
3
1
4av
4aii
4avi
4
4a
4ciii
4cii
NumberPeriodInfo
4ai
2
4ci
4aiii
4bi
4b
4c
4bii
4biii

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