• LeafOnTheWind@lemmy.world
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    1 year ago

    I thought O2 was higher during the time of the dinosaurs? Maybe that was earlier… I don’t remember when the time of the big bugs was.

    • Pipoca@lemmy.world
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      1 year ago

      Big bugs were in the carboniferous, about 350-300 million years ago.

      Dinos didn’t evolve until about 240 million years ago, and didn’t take over the world until about 200 million years ago. T Rex evolved quite late as far as non-avian dinos go, only about 68 million years ago.