Dinosaurs are famous for being big, from the towering Tyrannosaurus rex to the colossal Apatosaurus. But a new study ...

A 240-million-year-old reptile discovered in Brazil is revealing what evolution looked like just before the rise of dinosaurs ...

BBC Earth, presented by Chris Packham, takes viewers back in time as the TV show host explores a buried clue behind the ...

Every empire has a humble beginning, and none more humble than this one. Long before Tyrannosaurus rex crushed bones between its jaws, long before giants shook the ground with every step, the ...

Early mammals may have occupied the tiny-animal niches that dinosaurs never filled. The finding could explain why dinosaurs ...

By Will Dunham WASHINGTON, Aug 6 (Reuters) - Everyone knows dinosaurs got really big. Some of the long-necked plant-eaters were the largest land animals ever on Earth, as shown by Argentinosaurus, ...

Picture a Triceratops relative, small and beaked, gulping down a mouthful of pebbles like a bird at a gravel pit. It wasn't ...

Some 66 million years ago, an asteroid impact wiped out three-quarters of all plant and animal species on Earth, most notably ...

Scientists have long speculated that the demise of the dinosaurs some 66 million years ago was due to starvation triggered by ...

According to new evidence published today in the Journal of Geophysical Research: Biogeosciences, the answer may be the flash ...

They were considered the rulers of the Earth—but the dinosaurs’ reign had a surprising limit: downward—they were never really ...

Dinosaurs conquered the land at enormous sizes, but strangely, they almost never evolved into truly tiny animals. New research suggests that physiology alone can’t explain this missing miniature end ...