After years of searching worldwide, paleontologist Kenneth Lacovara found the extinction layer—and thousands of fossils—just ...

Earth has a long and dramatic history, and one recurring theme is extinction. Did you know that over the last 500 million years, our planet experienced five major mass extinction events? These events ...

Rock layers deposited before and after the major dinosaur extinction event 65 million years ago are surprisingly different.

A fossil from the blustery plains of Patagonia is revising your book on one of the most elusive bands of hunting dinosaurs.

Dinosaurs' extinction "re-engineered" Earth's surface, according to new research. The reptiles had such an "immense" impact ...

Dinosaurs had such an immense impact on Earth that their sudden extinction led to wide-scale changes in landscapes—including ...

The new dinosaur, named Joaquinraptor casali, was about 23 feet (7 meters) long and weighed over 2,200 pounds.

Scientists in Argentina have unearthed a new dinosaur species, Joaquinraptor casali, believed to be a more powerful predator than the Tyrannosaurus.

Using uranium-lead dating, researchers calculated the age of the eggs, rather than the sediments around them, at the ...

Earth's history is marked by violent mass extinctions that have shaped life on the planet. Here's how many of these events have occurred and their impact.

Large aquatic lizards once populated the Earth’s oceans—and you can find their fossils in suburban New Jersey.