JOHN SIBBICK / SCIENCE PHOTO LIBRARY JOHN SIBBICK / SCIENCE PHOTO LIBRARY
Eurypterid catching its prey, illustration. Eurypterids were arthropods that existed from the Ordovician to the Permian, from around 470 to 252 million years ago. They were among the first large predators to evolve in the Earth's oceans. They could reach sizes of up to 2.5 metres, but most were under 20 centimetres long.
Model release not required. Property release not required.