In 1967, a major breakthrough was made in our understanding of the evolution of the world. A student discovered fossils at Mistaken Point in Newfoundland, Canada.

The fossils give us a record of the oldest multi-cellular organisms to inhabit the earth.

Catherine Harvey has been speaking to Dr Shiva Balak Misra about his ground-breaking find.

A Made in Manchester production for BBC World Service.

(Photo: Image of Newfoundland's shores. Credit: Getty Images)