How the Club-Tailed Dinosaurs Got Their Clubs
Scientists might now be one step closer to realize how one of nature ’s most formidable weapons evolve . The ankylosaurus were herbivorous , armour - plated dinosaur which first come out around 156 to 152 million years ago and spread out to every continent but Africa . One advanced subgroup known as theankylosauridsupped the ante with an extra defense mechanism . At the last of their tails , most specie had a mammoth club ....