Many of them — including a duck-billed dinosaur mummy discovered in 1908 — hail from an area in eastern Wyoming. In the new study, scientists returned to this so-called mummy zone and found new ...

A paleontologist was trying to locate the site of a famous 1908 discovery when a rancher in Wyoming shared an important clue.

"For the first time, we have a complete, detailed picture of a large dinosaur that we are really convinced of." ...

An argument over whether fossils from several small dinosaurs represent a juvenile Tyrannosaurus rex or smaller adults of a ...

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

Researchers say they have uncovered a case of mistaken identity and found evidence of a species called Nanotyrannus lancensis.

The Nanotyrannus's small skull has been the source of debate among dinosaur experts for at least four decades, according to the paper. Earlier research suggested it belonged to a young T. rex, but ...

T. rex's story has been turned on its head by a new discovery about one of the world's most famous fossil finds. One of the ...

Wyoming's badlands have yielded two mummified duck-billed dinosaur fossils, revealing the first-ever evidence of hooves in ...

Researchers have unearthed two dinosaur "mummies" in the badlands of Wyoming, confirming duck-billed dinosaurs had hooves, ...

A team from the University of Chicago has achieved an unprecedented feat by analyzing two exceptional fossils in Wyoming ...

Stunning Edmontosaurus mummies from Wyoming reveal dinosaur hooves and skin in detail. First look at duck-billed giant's true ...