Bizarre Spinosaurus makes history as first known swimming dinosaur. A newfound fossil tail from this giant predator stretches our understanding of how—and where—dinosaurs lived.

Last day of the dinosaurs' reign captured in stunning detail. Rocks from deep inside the Chicxulub impact crater show what happened in the minutes to hours after one of our planet’s most ...

All about dinosaurs. Read about dinosaur discoveries including gigantic meat-eating dinosaurs, earliest dinosaurs and more. Dinosaur pictures and articles.