Dinosaurs come alive at London's Natural History Museum
A close relative of T-Rex and the creature that links birds and dinosaurs are just two of the primitive beings brought back to life in a new exhibition at London's Natural History Museum.
The Age of the Dinosaurs exhibition aims to give visitors a glimpse of life as it was 65 million years ago.
Paleontologist Dr Paul Barrett spoke to the BBC about how the attraction, featuring CGI and animatronic models as well as real fossils, is more than entertainment.
Here he explains how the exhibition is grounded firmly in the latest scientific theories about how dinosaurs would have looked and sounded - from the feathered coating of the Velociraptor, to the bellow of a Camarasaurus calling its mate.