Trapped in an 830-million-year-old rock salt crystal, scientists have discovered the potential remnants of prokaryotic and algal life which they say may – just may – still be alive.

The record-breaking specimen was found 6.5 feet deeper into the clay soil in the cave than the 1.2 million-year-old bones found back in 2007. It was unearthed by archaeologist Édgar Téllez of ...