Researchers believe that fossilized feces and vomit from dinosaurs are shedding light on how the ancient creatures evolved to become dominant on Earth. A recently published study analyzed hundreds of fossilized digestive materials from the Triassic period.

Feces, vomit and fossilized food from inside stomachs have provided new clues into how dinosaurs rose to dominate Earth, a new study revealed on Wednesday.

The way the dinosaurs relinquished their long dominance is well known. An asteroid struck Earth 66 million years ago, triggering a horrific mass extinction. But the way the dinosaurs - modest creatures initially - came to supremacy is less well understood.