Long before T. rex, the Earth was dominated by super-carnivores stranger and more terrifying than anything dreamed up by ...

Abundant fossil bones, teeth, trackways, and other hard evidence have revealed that Earth was the domain of the dinosaurs for at least 230 million years. But so far, not a single trace of dinosaur ...

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.