Comments by "Eric Astier" (@ericastier1646) on "Why did T. rex and Other Dinosaurs Have Tiny Arms" video.

You forgot the theory that those arms could have been covered with feathers but my guess is it's related to caring for something much smaller than themselves that mattered to them. And that would be ... their eggs. Those arms did the same job as a turtle digging sand to bury eggs. Why not use their massive legs ? because carefully blending the eggs into the ground and covering them with dirt required a more subtle tool and that's were those hands come handy.
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