Palaeontologists have discovered a remarkable new 506-million-year-old predator from the Burgess Shale of Canada. Mosura fentoni was about the size of your index finger and had three eyes, spiny ...

The mosura fentoni was about the size of an index finger and had three eyes, jointed, spiny claws, a circular mouth with teeth, and a body with swimming fins on the sides. A group of paleontologists ...