Giant flying squirrels that were as big as house cats glided across North America around 5 million years ago, researchers have discovered, after identifying an unusual fossil found inside an ...

Hesperornis was a large flightless bird that swam in the oceans and snared fish with a tooth-lined beak ... and the aquatic mosasaur giant Tylosaurus was known to consider Hesperornis a tasty ...

Scarlet macaws swoop overhead, swarms of green-blue Urania moths blanket mud puddles, and the giant trees that loom over all are so lush they block out the sky. In China jaguar teeth are likely ...

Analysis of chemicals of fossilised teeth suggests that the giant shark’s body temperature was about 7°C warmer than surrounding seawater, said a report published in the journal Proceedings of ...