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

Wyoming’s “dinosaur mummies,” once thought to preserve fossilized flesh, are actually detailed clay molds formed by microbes ...

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

New research has identified a dinosaur "mummy zone" in a series of ravines near Lusk, Wyoming. It's produced two mummies of a fleshy dinosaur with ...

Mummy of the juvenile duck-billed dinosaur Edmontosaurus annectens with fossil preparator Tyler Keillor of the University of ...

A new study sheds light on how these reptiles become “mummies” and paints a picture of what these ancient animals looked like ...

New research in a North American “mummy zone” in eastern Wyoming reveals how giant duck-billed dinosaurs were preserved in striking detail.

Scientists discovered that some dinosaur “mummies," such as Edmontosaurus annectens, weren’t preserved skin but clay molds ...

Two duck-billed dinosaur carcasses were preserved in a thin layer of clay for 66 million years. Now, they’ve helped ...

A pair of Edmontosaurus specimens found in a Wyoming dig help researchers to understand the process that led them to be ...

It’s been more than 60 million years since duck-billed dinosaurs roamed around what is now known as western North America. Or ...

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