76-Million-Year-Old Fossil Reveals How Armored Dinosaurs Used Their Sledgehammer Tails – CNET Posted on December 7, 2022 By Charlielikes Spiky ankylosaurs didn’t just fight off T. rex with their impressive armaments. Tech Tags:76-million-year-old, armored, billy wilkins, cnet, dinosaurs, fossil, how, reveals, sledgehammer, tails:, tech, technology, their, used