Couple unearth one of world’s greatest fossil finds in mid-Wales

Discovery could help plug gaps in understanding of evolution after Cambrian explosion more than 500m years ago

Many people discovered new interests closer to home as a result of Covid-19 lockdowns. For Dr Joseph Botting and Dr Lucy Muir, it was a 10-metre-wide quarry in a sheep field near to their home in Llandrindod, central Wales, which appeared to be teeming with tiny fossils.

Now researchers believe the site could help plug gaps in scientific understanding of how evolution proceeded after the Cambrian explosion - the period when the ancestors of most modern animals are believed to have evolved. It could even prove to be as important as the Burgess Shale in Canada that preserves one of the world's first complex marine ecosystems, experts say.