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T-Rex problems (i.imgur.com)
submitted 2 years ago by to c/4chan@lemmy.world
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[–] 9 points 2 years ago (2 children)

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.

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  • [–] 3 points 2 years 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.

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