Arizonasaurus was an archosaur from the Middle Triassic.

Rock layers deposited before and after the major dinosaur extinction event 65 million years ago are surprisingly different.

It's been 66 million years since dinosaurs roamed the Earth, and many may blame an asteroid's explosive collision with our planet for the end of the creatures' reign. But for years, scientists have ...

The researchers are not the first to propose that the space rock belonged to a group of asteroids that formed beyond the orbit of Jupiter. Their findings, however, strengthen the case thanks to a rare ...

Who knows what life would have looked like on Earth if an extinction-level event hadn't killed all of the dinosaurs? I highly doubt the dinosaurs would have let us evolve and take over the planet the ...

A fossil skull from a long-extinct animal captivated the public when it went on display at the South Australian Museum.

The highly anticipated exhibition for dinosaur fans, Dinosaurs | Extinctions | Us, is finally opening this weekend on 11 Oct.

So in one way, dinosaurs never went extinct; they just turned into birds. However, in the stricter sense of the word, dinosaurs had a whole combination of anatomical and behavioral characteristics ...