PALAEONTOLOGY

Was it the worst ever case of toothache, or marks from a deadly battle?

The reptile's teeth were 15 cm long from root to tip.

Scientists have come up with a new tree of life for frogs and a new timeline for their evolution.

World Asteroid Day raises awareness of the threats posed by asteroids.

The end-Triassic extinction event coincided with pulses of volcanism, as shown by mercury levels in sediments.

Astronomers suspect that the Sun's twin 'escaped' into space, 'never to be seen again.'

The pliosaur was a more gentle relative of its large and fearsome cousins.

The dinosaur's fossil measures at 8 metres and is the third in the world to be discovered from a marine stratum.

The quarry is the densest deposit of Jurassic dinosaur bones discovered to date.

The supernova was found by scientists with the help of volunteers from the public.

A tooth of the dinosaur was discovered at Owl Creek.

Scientists have modelled how T-Rex crushed bones of its prey.

Potentially groundbreaking results are to be revealed in the BBC2 documentary The Day the Dinosaurs Died.

Enteroccoci emerged with the first animals that crawled on land some 450 million years ago.

The new discovery indicates that microbial life existed in hot springs far earlier than previously known.

The Baby Louie fossil was discovered more than two decades ago in China.

The dinosaur had extraordinarily tiny arms.

The discovery shows that advanced aerodynamic feathers evolved much earlier than thought.

The dinosaur relative Teleocrater had features in common with crocodilians, dinosaurs and birds.

Scientists have discovered evidence of fault displacement linked to the end-Cretaceous asteroid impact.

The fossil is the oldest known member of the semi-aquatic phytosaurs.