As seen from the picture, the Cenozoic Era (yellow) takes up 10 minutes, the Mesozoic Era (green) takes up 27 minutes, the Paleozoic Era (orange) takes up 45 minutes, and the Precambrian era (blue) takes up the remaining time. It is a huge majority of the Earth's history. I saw that on the original timeline as well, but I never realized how much of a majority it really was.
For the original timeline, we had to write several events on a paper. Here are three pictures, one telling which events correspond to which letter, one showing the events of the last three eras, and one showing all of the events
The first picture lists the events and times. Those times are how long ago they would be on a clock. For example, Mr. Wong's birthday would be 0.000558 seconds ago on the clock. You can see in the second picture that most of the events (11/12) are in the three most recent eras. Only one event, single-celled organisms appearing, happened in the Precambrian era. This shows how slowly major evolution and change occurred, then how fast it ramped up.




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