Sue, the Tyrannosaurus Rex displayed at Chicago’s Field Museum, didn’t use its tiny arms very often. That’s the initial conclusion from a study by the Argonne National Laboratory.
Researchers scanned the arm bones to generate a 3D image down to the cellular level. Associate Dinosaur Curator Pete Makovicky says the image doesn't show many signs of stress on the bones that would indicate frequent use.
Final results of the study will take months or years, and the exact purpose of T-Rex's small arms remains a paleontological mystery. say there aren’t many signs of stress on the bones indicating frequent use. The exact purpose of T-rex’s small arms remains a paleontological mystery.