University of Wyoming researchers used CT scanning to see how much of the fossilized bones in an historic dinosaur were real.

The Arctic landscape during the Cretaceous Period may have been dominated by the dinosaurs, but the rivers and streams held something more familiar. Alaska's fresh waters 73 million years ago were ...

Scientists had reportedly found a dinosaur that died the day the world ended. At a site in North Dakota, fossils were di ...

Most people picture the time of dinosaurs as a steamy, tropical world. But during the Late Cretaceous period, northern Alaska ...

The thought of dinosaurs usually brings to mind huge, hulking creatures of the past. But not all dinosaurs were large. Some ...

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the ...

Crocodile-like sebecids were known to roam South America after dinosaurs went extinct. Recently found fossils suggest they inhabited the Caribbean as well—and thrived there long after they ...

New fossil evidence suggests echidnas evolved from a water-dwelling ancestor, not a land-based one. The bone structure ...

Fossils of the T. rex, tyrant lizard and queen of the dinosaurs, are found exclusively in North America. Strangely, they have ...

The remains of a giant "sea monster" found in a Mississippi riverbed have been determined to belong to the largest mosasaur ...

Tyrannosaurus rex evolved in North America, but its direct ancestor came from Asia, crossing a land bridge connecting the continents more than 70 million years ago, according to a new study.

A coelacanth, known by some as the "dinosaur fish," was spotted in eastern Indonesia in a rare sighting of a species once ...