Ankylosaurs Had Composite Armor

An anonymous reader writes "Ankylosaurs were the most heavily armored dinosaurs. Researchers thought their protective plates were a lot like modern crocodiles. But a new study by a University of Bonn grad student Torsten Scheyer found that fibers in the plates were woven for strength and lightness much like Kevlar or fiberglass. Good thing, as ankylosaurs had to contend with T. rex."