Our mammal ancestors evolved to compete with dinosaurs but may have lost something in the process.

Impress your niece or nephew with these T rex facts.

Climate change triggered by massive volcanic eruptions, and not a meteorite plummeting to Earth, may have led to dinosaurs' extinction.

A few groups of palm-like plants that were a favored food of grazing dinosaurs still exist today. Now researchers have discovered how.

New laboratory experiments add analytical rigour to the search for ancient biomolecules

An often-overlooked dino had a unique combo of traits linked with animals that spend at least part of their time underground, a study finds.

The fossil record tells conflicting stories about what happened to flowering plants after the asteroid.

New research shows that placental mammals survived the mass extinction that killed the dinosaurs.

A newly discovered dinosaur, Iani smithi, named for the Roman god Janus, lived when Earth's warming climate forced huge changes in global dino populations.