To gain a better understanding of the creature, a team at the University of Chicago led by anatomist Paul Sereno tracked down the historical locations of previous dinosaur finds in east central Wyoming.

Scientists have uncovered fleshed-out imprints of a pair of hoofed dinosaurs in Wyoming. Hardened clay formed around the two young Edmontosaurs, preserving their skin contours and providing experts with unprecedented insight how they looked.

Argentinian researchers have described a Carnian theropod with features previously thought to belong only to much later neotheropods, indicating greater early dinosaur diversity than expected as well as a possible climate-related ebb and return of dinosaur abundance in northwestern Argentina.

Paleontologists may have discovered when plant-eating dinosaurs evolved their long necks after a new species of sauropodomorph was found in Argentina.

Scientists have unveiled a previously unknown tyrannosaur species that fundamentally changes our understanding of how the mighty Tyrannosaurus rex evolved. The newly identified dinosaur, named Khankhuuluu mongoliensis - meaning "Dragon Prince of Mongolia" - represents a critical evolutionary link between small prehistoric predators and the colossal apex hunters that would dominate the Late Cretaceous period.

In a new paper in Science, experts from the University of Chicago describe steps that took place some 66 million years ago to transform the carcasses of a duck-billed dinosaur, Edmontosaurus annectens,

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, causing mass extinction.