Pachycephalosaurids are known for its species of bi-pedal, dome-headed dinosaurs. The clade -- a group consisting of a single ancestor and all of its descendants -- is "exclusively known" from the Late Cretaceous periods in Asia and western North America, the authors wrote.

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.

A new pachycephalosaur, officially named Zavacephale rinpoche, was described in the journal Nature. The word rinpoche is Tibetan for "precious one" and refers to the domed skull.

Five specimens now attributed to B. harmoni were discovered in the area, marking the first known pachycephalosaurid species from the Late Cretaceous period to be found in that region.

More than a century ago prolific fossil collector Charles Sternberg discovered the skeleton of a duck-billed Edmontosaurus dinosaur in the sandstone rocks of the Lance Formation in eastern Wyoming. The remains were covered in fossilized flesh and skin,

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.

Researchers have announced the discovery of the longest dinosaur trackway in Europe, found at a huge fossil site in an Oxfordshire quarry. The new finding is part of a massive