You’ve probably heard the jokes. Now, paleontologists want to know why Tyrannosaurus rex’s arms are so short. And the Field Museum’s dinosaur Sue is lending a hand — er, an arm — to the ...

A palaeontologist believes that the T-Rex's short forearms may have had more vicious purposes than previously thought. More than just grasping prey or mating, it's possible the T-Rex used the ...

You’ve probably heard the jokes. Now, paleontologists want to know why Tyrannosaurus rexes’ arms are so short. The Field Museum’s dinosaur Sue is lending a hand — er, an arm — to the ...

April 5 (UPI) --The Tyrannosaurus rex's arms may have evolved to become extremely short to lower the risk of bites while feeding in packs, a new study says. A 45-foot-long T. rex may have 3-feet ...