Study reveals T. rex's tiny arms evolved as powerful jaws took over hunting

For over a century, the diminutive arms of Tyrannosaurus rex have invited ridicule and puzzlement in equal measure — yet a new study from University College London and the University of Cambridge suggests those shrunken limbs were not nature's oversight but its signature. Examining 82 theropod species across the Mesozoic, researchers found that five separate lineages independently traded functional forelimbs for increasingly powerful skulls and devastating bite forces, a convergence too consistent to be coincidence. The head, it seems, inherited the role of the hand — and in doing so, wrote on