Tyrannosaurus rex

For decades, paleontologists have relied on fossilized bones to reconstruct the lives of dinosaurs—until now. Using particle accelerator technology, researchers have uncovered preserved blood vessel structures inside a 66-million-year-old Tyrannosaurus …

T. Rex’s Tiny Arms: New Research Suggests a Fearsome Purpose For decades, the diminutive arms of Tyrannosaurus rex have puzzled paleontologists. Theories ranged from vestigial limbs with no real function …