Learn how the tiny dinosaur fossil from Patagonia reshapes alvarezsaur evolution and their unusual digging claws.

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 ...

When the first "Jurassic Park" movie debuted in 1993, many paleontologists objected to the depiction of velociraptors hunting at night. Conventional wisdom said that dinosaurs were diurnal animals.

The fossil called "Medusa" could be a dinosaur mummy—the remains of an Edmontosaurus about 66 million years old that researchers believe contains a significant amount of skin and tendon tissue. It's ...

The tracks in the red sandstone told a story. They showed that a pair of Sauropods, giant dinosaurs with long necks, had ...