A recent study suggests the unique geology of an area in Wyoming makes it a trove of unusually preserved fossils

Now, a research team says new evidence resolves the case. The latest clue comes from a complete skeleton — first uncovered in Montana in 2006 — that scientists say identifies the mystery reptile as its own species and not a juvenile Tyrannosaurus rex.

An argument over whether fossils from several small dinosaurs represent a juvenile Tyrannosaurus rex or smaller adults of a separate species may finally be settled.

A new dome-headed dinosaur species was discovered in Montana, a study released this month shows. Researchers discovered the fossils of Brontotholus harmoni, a dome-headed dinosaur in Montana, according to the paper published Oct. 9 in the Zoological Journal of the Linnean Society.

The skeletons of a duck-billed dinosaur found more than 100 years ago are so well-preserved that they contain fleshy body parts embedded in thin layers of clay.

The new species is called Nanotyrannus. Compared to the well known tyrannosaurus rex, a nanotyrannus was more speedy and agile.

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.

Tributes have been paid to an islander who discovered evidence of dinosaur footprints in the Isle of Skye as a schoolboy. Dugald Ross, who has died at the age of 68 following a period of ill health, made the discovery years before they were officially recognised as fossils in the 1980s.

After nearly 10 years of bringing prehistoric adventures and education to southern Colorado, the Royal Gorge Dinosaur