A new look at the "Dueling Dinosaurs" fossil reveals that Tyrannosaurus rex was not the only tyrannosaur roaming the land.

A 3D-printed version of the K. atrox skeleton found in Argentina's southern Patagonia. A hyper-carnivore, this ancient relative of today's alligators and crocodiles may have preyed on dinosaurs. - ...

Tens of millions of years ago, an apex predator resembling a giant crocodile stalked the humid freshwater floodplains of southern Patagonia. Measuring up to 11.5 feet (3.5 meters) long and weighing ...

The anatomy of a Chinese fossil offers a hint that birdsong may be as old as the dinosaurs themselves. By Asher Elbein Since the 1930s, dinosaurs have rumbled, snarled and roared on film. But the ...

A rare skeleton of a roughly 150 million-year-old Ceratosaurus that had been on display for 25 years at a Thanksgiving Point museum sold for more than $30.5 million Wednesday, making it one of the ...

The largest piece of Mars ever found on Earth was sold for just over $5 million at an auction of rare geological and archaeological objects in New York on Wednesday. But a rare young dinosaur skeleton ...

The largest piece of Mars ever found on Earth was sold for just over $5 million at an auction of rare geological and archaeological objects in New York on Wednesday. But a rare young dinosaur skeleton ...

Sotheby’s is auctioning the only known juvenile specimen of a Ceratosaurus nasicornis dinosaur for an estimated $4-6 million. It is one of the finest and most complete examples of its genus. A swift ...

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We welcome Emery-Wetherell’s (1) comments on our study of the Early Cretaceous Yixian Formation in northeast China (2). Detailed attention to taphonomy of this assemblage, especially the ...