A study of fossilized feces and vomit attempts to piece together why dinosaurs were so evolutionarily successful.

Fossilized digestive material offers unparalleled insights into the dinosaurs' diets, feeding behaviors and parasites.

Researchers used fossilized poos, known scientifically as coprolites, to learn more about how dinosaurs came to rule the Earth. Researchers have conducted what could be the largest study ever of dinosaur poop.

Dinosaur poop is providing vital clues about "who ate whom" 200 million years ago. Researchers have been able to identify undigested food remains, plants and prey in the fossilized feces of the big beasts.