This is not the ideal forum to advance a paleontological thesis, but my theory is that T-rex retained their seemingly useless forearms to groom their mouths. Lizards and turtles do it all the time, and birds often use their feet for the same purpose. Keeping those teeth in good shape was a definite survival need.
rmleon about 15 years ago
I try to get my dog to scratch my back, but she doesn’t do it.
MotherOfMoses about 15 years ago
rmleon, then maybe you should get your cat to do it.
bald about 15 years ago
rmleon
go get a monkey, they will scratch your back
pschearer Premium Member about 15 years ago
This is not the ideal forum to advance a paleontological thesis, but my theory is that T-rex retained their seemingly useless forearms to groom their mouths. Lizards and turtles do it all the time, and birds often use their feet for the same purpose. Keeping those teeth in good shape was a definite survival need.