How big was the Tyrannosaurus rex? Learn how, even though they may not have been the largest theropod, they’re definitely one of the most popular.

For the first time ever, we’ve been able to prove that some dinosaurs had hooves, thanks to two remarkably well-preserved mummified dinosaurs retrieved from Wyoming’s Badlands. The specimens are the duck-billed dinosaurs Edmontosaurus annectens that,

In a new paper in Science, experts from the University of Chicago describe steps that took place some 66 million years ago to transform carcasses of a duck-billed dinosaur, Edmontosaurus annectens, into dinosaur “mummies” preserving fine details of scales and hooves.

A clay layer one-hundredth of an inch thick preserves the fleshy details of dinosaurs buried suddenly in east-central Wyoming.

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

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

If you've ever seen a cut-down tree, you've noticed the rings that mark each year of growth. But those rings don't just show the tree's age. They show how fast the tree grew. A new study took this idea and applied it to dinosaur bones to learn just how ...

A new species of dome-headed dinosaur has been discovered in fossils found in Montana, according to researchers.

Imaging technology has revolutionized paleontology, allowing scientists to study fossils that are buried deep in the rock or too small to handle. Two recent studies I was involved with show some of the technology's potential,