of fossils has allowed researchers to study its paleobiology in detail, including its brain, how it may have fed, and its injuries and pathologies, such as evidence for tyrannosaur attacks on a few specimens.

In an Edmontosaurus fossil, Tuinstra et al. (2025) made the first clear detection of actual original dinosaur organic material, showing the presence of ancient hydroxyproline (a building block of collagen) in the fossil, and refuting the hypothesis that organic