Some were the size of a dog. Others were as large as polar bears. A newly-discovered fossil of the ferocious hyaenodont is ...

Carbon dating of teeth fragments found in Brazil reveals that some species persisted for thousands of years longer than ...

Legend has it the axolotl was not always an amphibian. Long before it became Mexico’s most beloved salamander and efforts to ...

Great news has emerged from Victoria, Australia, as a once-extinct fish, the olive perchlet, has been released back into the ...

Some animals in the United States were believed to be extinct—until they were spotted again, sometimes decades later! Whether ...

Research suggests that tropical riparian ecosystems – those found along rivers and wetlands – recovered much faster than expected following the end-Permian mass extinction around 252 million years ago ...

We often talk about water and how important it is to make sure it is clean and unpolluted. But lakes usually fall through the ...

The Highland nymph, or Alpine coffee moth, is on the edge of extinction due to loss of mountain willow habitat, experts have said.

A nearly complete skull fossil found in Egypt has revealed a new species of Hyaenodonta, an apex carnivore that mysteriously went extinct about 25 million years ago.