A chicken-sized dino, the oldest known in North America, has thrown a wrench in the widely accepted timeline of early ...

A new study finds that one of the hottest periods in Earth's history may have driven lampreys apart—genetically speaking. The ...

How and when did dinosaurs first emerge and spread across the planet more than 200 million years ago? That question has for ...

Few creatures capture the imagination of both young and old as much as the large dinosaurs. We know they existed, the fossil records reveal many different types, both land and aquatic, different sizes ...