In the Rockies, Richard Fortey explores a fossilised seabed containing bizarre life forms that have revolutionised understanding about the beginnings of complex life.

Professor Richard Fortey visits China to see a fossil site that has yielded remains of feathered dinosaurs and rewritten the story of the origin of birds.

Professor Richard Fortey investigates the remains of an ancient volcanic lake in Germany where fossils of early mammals and giant insects have been found.