Researchers have conducted what could be the largest study ever of dinosaur poop. The findings shed new light on how dinosaur's diets allowed them to dominate the planet.

Experts say fossilised dinosaur poo and vomit have provided the key to how the animals came to rule the Earth. From fossils of gigantic dinosaur spiders to a feathered dinosaur tail, there has been fascinating evidence of dinosaurs uncovered all around the world.