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

They found that the fossilized poop and vomit — scientifically known ... an ancient mammal relative with a turtle-shaped head, suggested that creature had a restricted diet, feeding principally ...

A new study published Wednesday in the journal Nature sheds some new light on how that came to be, and the research behind it has a whole lot to do with one thing: fossilized dinosaur poop.

While it is not quite as big as a Tyrannosaurus rex skeleton, fossilized poop can help paleontologists recreate lost worlds .