Animals & Pets News: Imagine a world where the ground was dotted with creatures bigger than your wildest nightmares, not roaring beasts, but bugs the size of buses. Long b. A colossal millipede, Arthropleura, once roamed Earth 326 million years ago, predating dinosaurs. A 2018 fossil discovery revealed this arthropod, estimated to be 8.8 feet long and weighing 50 kg. These giant invertebrates inhabited ancient coastal w... [2682 chars]