From horseshoe crabs to crocodiles, some of these creatures have looked about the same for hundreds of millions of years.

Prehistoric animals are often pictured as distant fossils, yet a surprising number of species still walk, swim, and crawl across Earth with body plans that echo deep time. Strictly speaking, ...

Cassowaries Judging by its giant, claw-like feet alone, it’s easy to see why people think this giant bird is directly ...

Researchers from the Canadian Museum of Nature (CMN) have identified a new species of rhino that once roamed Canada's High Arctic 23 million years ago. The extinct rhinoceros, described in the journal ...

This football-sized creature could grind its teeth like a hard-core plant-eater, back before that was really a thing — and it ...

Hundreds of millions of years ago, the first animals to crawl onto land were strict meat-eaters, even as plants had already taken over the landscape. Now scientists have uncovered a ...

A groundbreaking new study from Bar-Ilan University shows that one of sleep's core functions originated hundreds of millions of years ago in jellyfish and sea anemones, among the earliest creatures ...