Oldest ever engraving discovered on 500 000-year-old shell

Oldest ever engraving discovered on 500 000-year-old shell

Homo erectus on Java was already using shells of freshwater mussels as tools half a million years ago, and as a 'canvas' for an engraving. An international team of researchers, led by Leiden archaeologist José Joordens, published this discovery on Decembe