Hadrosaurs, also known as duck-billed dinosaurs, are often portrayed as friendly, approachable creatures. According to Dr.

But they weren't interested in the dinosaurs' bones. Instead, they looked at the dinos' fossilized vomit and poop — known as regurgitalites and coprolites, respectively. These can provide vital ...

NEW YORK — Using fossilized feces and vomit samples from Poland, scientists have reconstructed how dinosaurs came to dominate the Earth millions of years ago. Researchers aren’t sure whether ...