We know dinosaurs were big, but how big were they? And how do we even know? Luckily, paleontologists and other scientists know how to find the answers. By measuring fossils, comparing them to the ...

Jack Horner — the paleontologist who's served as technical advisor on all of the Jurassic Park films — thinks that he can make a real dinosaur in the next five to 10 years. Horner's idea for a ...

Most of us imagine dinosaurs as the huge, towering prehistoric beings that once walked the Earth. But it turns out that dinosaurs were actually a wide range of sizes — and some of them weren’t ...

Our collective fascination with dinosaurs, research into their behaviors and their storied past, and our excitement whenever a new discovery is made is certainly palpable. While it is currently ...

This tiny dinosaur is about the same size of a Labrador - but you wouldn't want to take it for walkies. Scientists have unearthed a fossil of leptoceraptopsids, a plant-eating cousin of the well ...

After millions of years, six incredible dinosaurs are coming back to life. In “Walking with Dinosaurs” on PBS, paleontologists discover the lives behind the fossils, using the latest ...

The monster animal, more closely related to American alligators than modern crocodiles, had teeth the size of bananas and a strange enlarged snout.

THE remains of a fast-running dinosaur the size of a turkey have been uncovered in Australia. The plant-eater lived 113million years ago in a valley which linked the country with Antarctica.

Fossils unearthed in Argentina represent the most complete giant sauropod dinosaur ever discovered.

Here's how big all the dinosaurs from "Jurassic Park" are relative to an average human man. Monica Manalo contributed reporting on a previous version of this article.

Most of us imagine dinosaurs as the huge, towering prehistoric beings that once walked the Earth. But it turns out that dinosaurs were actually a wide range of sizes — and some of them weren’t much ...