Ancient 'Ironman' Worm Was 'Armed' and Armored | Video

With circles of spiky teeth, articulated armored plates and sharp spines, the 2mm-long Eokinorhynchus rarus, lived in China 535 million years ago. It’s related to modern insects, spiders, crustaceans and roundworms.

credit : Hao Gong and Drew Muscente at Virginia Tech, and Bin Wan at Nanjing Institute of Geology and Palaeontology