A team of biologists just discovered a new species of chiton, a marine mollusk that clings to rocks and feeds on algae.

The pygmy long-fingered possum and the ring-tailed glider, two marsupials believed to have died out thousands of years ago, ...

After years of analysis, the animal turned out to be an entirely new species — one that lived millions of years longer than ...

For nearly two centuries, a small brown frog living in Southeast Asian rainforests was considered a single, well-understood ...

With its uniquely twisted jaw and sideways-facing teeth, the new species was a relic of an earlier and more experimental time in the evolution of life on Earth. Fossils discovered in Brazil show that ...

Reef fish in different oceans often develop similar color patterns because evolution explores the same set of biological possibilities.

The death of this ancient species, discovered alongside more newly described mammals, had been greatly exaggerated.

Noyo Center for Marine Science Stranding Coordinator Sarah Grimes gives tips on sighting whales, and the Center announces ...

The Arkansas Game and Fish Commission is urging residents to be mindful of water pollutants to protect endangered species like the Ozark cave fish and Benton County crawfish.

A new blind fish species, Gitchak nakana, discovered in Assam, features a unique skull structure and translucent appearance.

Biologists identify a new species of "living fossil" chiton through cutting-edge mitochondrial genome sequencing.

Two marsupials thought extinct for over 7,000 years were rediscovered in New Guinea through fossils, photos and citizen science.