Scientists discovered some of the oldest bony fish fossils in China. The fossils explain the early history of animals with backbones.

When the asteroid ended the age of non-avian dinosaurs, it cleared ecological space on a global scale. Small survivors adapted quickly, and over the years, their descendants grew into animals that ...

Researchers discovered that a 215-million-year-old reptile started life on four legs and switched to two as an adult.

Two marsupial species presumed to be extinct have “risen from the dead” after being rediscovered on the island of New Guinea, which lies north of Australia. One is the pygmy long-fingered ...

In paleontology, lineages that drop out of the fossil record and then re-emerge after long periods are termed ‘Lazarus taxa.’ ...

Millions of years ago, some prehistoric otters grew far larger than any species alive today. Fossils of the giant otter Siamogale show a powerful predator with jaws capable of crushing hard shells and ...

A "peculiar" ancient relative of the crocodile which experts believe began life on four legs before, in adulthood, it learned how to walk on just two has been revealed in a new study. Named ...

If you thought that crocodiles were menacing enough, be glad that you didn’t live in Arizona some 225–201 million years ...

Roughly 425 million years ago, in the warm seas over what is now southern China, there lived a meter-long bony fish with jaws ...