Learn about the mummified dinosaurs that have had their features preserved in a layer of clay after being submerged in floodwaters 66 million years ago. What kind of animal had horse-like hooves, a ...

In 1980, Luis Alvarez and Walter Alvarez, who were looking at a clay layer, discovered an unusual increase in iridium. This was more than an anomaly in the trace of metal but was actually evidence of ...

Add Yahoo as a preferred source to see more of our stories on Google. The scaly skin of a crest over the back of the juvenile duck-billed dinosaur Edmontosaurus annectens, estimated to be about 2 ...

Add Yahoo as a preferred source to see more of our stories on Google. A mummy of a juvenile duck-billed dinosaur, _Edmontosaurus annectens_, preserved as a dried carcass. Tyler Keillor/Fossil Lab ...

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.

What kind of animal had horse-like hooves, a duck bill, and miniature scales all over its body? The answer isn't some fictional creature with different parts stitched together like Frankenstein's ...

In the badlands of eastern Wyoming, the Lance Formation is a trove of prehistoric fossils. And one area in particular — a region less than 10 kilometers (6 miles) across — has provided scientists with ...