Quilmesaurus was a predatory dinosaur from the Cretaceous period.

Such a trait would be inherited by their descendants to avoid the predatory dinosaurs.

Tyrannosaurus was a large predatory dinosaur from the Upper Cretaceous, 67 to 65.5 million years ago.

Ceratosaurus was a predatory dinosaur from the Upper Jurassic period, 156 to 145 million years ago.

The other discovery is the partial skeleton of a predatory dinosaur completely new to science.

Hunter jogged after him, always alert for predatory dinosaurs.

"We can't count on predatory dinosaurs showing up at the right time," said Steve.

Carnotaurus was a predatory dinosaur that lived 70 million years ago.

He seems to stop sometimes, maybe to get his bearings or to avoid a predatory dinosaur.

A long-snouted predatory dinosaur from Africa and the evolution of spinosaurids.