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

Scientists at MIT have found compelling chemical evidence that Earth’s earliest animals were likely ancient sea sponges. Hidden inside rocks over 541 million years old are rare molecular “fingerprints ...

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 ...

Ancient DNA shows an old Irish goat breed dates back to the Bronze Age, linking modern goats to animals raised in Ireland ...

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

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 ...

BEIJING -- A team of paleontologists has discovered the first-known evidence of a bone tumor in a vertebrate preserved in ...

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 ...

One of the biggest quests in biology is understanding how every cell in an animal's body carries an identical genome yet still gives rise to a kaleidoscope of different cell types and tissues. A ...