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To help compare orders of magnitude of different times this page lists times between 3.2 million years and 32 million years (1014 seconds and 1015 seconds) See also times of other orders of magnitude. - Shorter times
- 3.74 million years -- half-life of manganese-53
- 4 million years -- estimated average lifetime of biological species
- 4 million years -- time since beginning of last ice age
- 4.2 million years -- half-life of technetium-98
- 5 million years -- time since beginning of Pliocene Epoch
- 5 million years -- time since end of Miocene
- 6.5 million years -- half-life of palladium-107
- 15.6 million years -- half-life of curium-247
- 20 million years -- time since the first forms of grass appeared
- 23.42 million years -- half-life of uranium-236
- 24 million years -- time since beginning of Miocene Epoch
- 24 million years -- time since end of OligoceneThe Oligocene epoch is a geologic period of time that extends from about 33. 7 million to 23. 8 million years before the present (BP). As with other older geologic periods, the rock beds that define the period are well identified, but the exact dates of t Epoch
- Longer timesTo help compare orders of magnitude of different times this page lists times between 1015 seconds (a petasecond and 1016 seconds (32 million years and 320 million years) See also times of other orders of magnitude. Shorter times 34. 7 million years half-l
Orders of magnitude (time)
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