A large fish-eating dinosaur died beside a river 125 million years ago in Cretaceous Thailand. Now, the remains of this ...

Scientists have reconstructed the head of an ancient human relative from 1.5 million year-old fossilized bones and teeth. But ...

The textbook version of human evolution has long held that Homo erectus was the pioneering species to venture beyond Africa's borders around 1.8 million years ago. However, new analysis of five skulls ...

A Mazon Creek fossil shows a horseshoe crab riddled with pits, likely from microbes or parasites, revealing a 300-million-year-old infection.

Researchers are looking for answers behind the mystery of Gigantopithecus blacki, the largest known primate that ever lived.

Learn how chemical clues reveal a mosasaur was hunting in freshwater rivers as the Cretaceous seaway receded.

Nearly 4.5 million years ago, two large, hot stars brushed tantalizingly close to Earth's sun. They left behind a trace in the clouds of gas and dust that swirl just beyond our solar system—almost ...

A University of Cambridge-led team has analyzed giant anaconda fossils from South America to deduce that these tropical snakes reached their maximum size 12.4 million years ago and have remained ...

Over 500 million years ago, the Cambrian Period sparked an explosion of skeletal creativity. Salterella, a peculiar fossil, defied conventions by combining two different mineral-building methods.