Most dinosaurs could not put their hands palms-down, because the lower arm bones were not capable of twisting long-ways over one another. So Tyrannosaurus rex and most other dinosaurs would have held their hands palms-inward, as if they were getting ready to clap, not palms-down.
The rotation of the forearm that allows us to turn our hands palm-up or palm-down is called pronation and supination: https://commons.wikimedia.org/wiki/File:Pronation_and_supination.jpg
However, T. rex might have been able to turn their hands palm-upward: https://www.livescience.com/63858-t-rex-dinosaur-arms.html
Doctor Toon over 2 years ago
It would be fun to watch one try
well-i-never over 2 years ago
No, but most of them could mime. The glass box was their favorite.
oakie817 over 2 years ago
actually saw science show that said while they were short, t-rex’s arms were massive and they used them to hold down their prey
unfair.de over 2 years ago
They had to. How else could they switch fork and knife when eating?
Algolei I over 2 years ago
Most dinosaurs could not put their hands palms-down, because the lower arm bones were not capable of twisting long-ways over one another. So Tyrannosaurus rex and most other dinosaurs would have held their hands palms-inward, as if they were getting ready to clap, not palms-down.
Source: https://www.reddit.com/r/askscience/comments/13xe18/how_do_paleontologists_know_that_they_put_the/
The rotation of the forearm that allows us to turn our hands palm-up or palm-down is called pronation and supination: https://commons.wikimedia.org/wiki/File:Pronation_and_supination.jpg
However, T. rex might have been able to turn their hands palm-upward: https://www.livescience.com/63858-t-rex-dinosaur-arms.html
ChessPirate over 2 years ago
Of course they could! Home, kids, job, terrorizing the countryside… ☺
raybarb44 over 2 years ago
Not very well probably……
cuzinron47 over 2 years ago
I could say ‘yes’, and try to prove me wrong.
ktrabbit over 2 years ago
I love how these three always seem to be in the middle of a project, and we usually don’t know what it is. The definition of “playing”, I guess!