Arizonasaurus was an archosaur from the Middle Triassic.

The fact that dinosaurs had feathers is starting to become common knowledge, but what's not commonly known is what those ...

Everyone knows what a bird is – and pretty much everyone knows what a dinosaur is. But not everyone is aware that birds evolved from dinosaurs approximately 160 million years ago. In fact, birds and ...

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

Fossilized feathers of an extinct bird show it molted differently than modern birds. The prehistoric bird lost its feathers all at once, while many modern birds molt in waves. Regrowing feathers uses ...

When the big asteroid hit Mexico 66 million years ago, it set off wildfires, tsunamis and massive clouds of dust that darkened the skies, killed much of Earth’s plant life and triggered a chain of ...

Surely a contender for the most bizarre-looking dinosaur of them all is Yi. This small (in size and name) dinosaur from the ...

My son hugs a large, stuffed dinosaur. Source: Kachine Blackwell, used with permission. Lately, I’ve been learning a lot about dinosaurs. Or, I should say, my three-year-old son has been learning a ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Everyone knows what a bird is – and pretty much ...