New Dinosaur Had the T. Rex Look: Tiny Arms

Like its distant relative, T. rex, a newly identified dinosaur, named Gualicho shinyae, sported small arms and hands with two clawed fingers. "We're slowly getting more information on this sort of pattern of limb reduction, and getting at this question of why tyrannosaurs and some other theropods shortened their forelimbs," said study corresponding author Peter Makovicky, curator of dinosaurs at the Field Museum in Chicago.