Scientists have discovered an enormous species of duck-billed dinosaur that lived in what is now New Mexico about 75 million ...

Now, evidence suggests that some of these spiral-shaped species did manage to persist after all. Recent analysis of ammonite ...

The fossil was originally found in New Mexico that year. Then, in 1935, scientists classified it as a Kritosaurus, which, ...

This colossal dinosaur stood among the largest animals ever to walk the planet. Its powerful strides likely shook the Earth ...

Tenontosaurus fossils found in West Texas, the southernmost record of the dinosaur and a key to the Early Cretaceous.

In the aftermath of the giant asteroid that crashed into the Yucatan Peninsula about 66 million years ago, approximately 75% ...