An early armored dinosaur lacked the weaponized tail of a famous cousin, but it made up for it with a good-enough sense of smell.

The distinctive dinos were found in Utah and Montana, with each sporting spiked neck shields.

Sleep patterns like REM and SWS evolved in a common animal ancestor more than 300 million years ago.

A new titanosaur has just been found with one of the best-preserved skulls ever discovered for a dinosaur.

A recently discovered baby dinosaur was about the size of a golden retriever upon hatching, yet its parents grew to be the largest animals ever to walk the Earth.

Life went from really bad to worse for dinosaurs in the years preceding the asteroid impact, new research shows.