A new study based on mathematical modeling weighs in on the fierce debate among paleontologists over the origins of the king ...

Being better able to tolerate cooler temperatures than their rivals, tyrannosaurs grew larger to become the apex predators of ...

A new study suggests that the T. Rex's ancestors may have evolved in North America, contradicting the mainstream evolutionary ...

After the dinosaurs' extinction, terrestrial crocs known as sebecids became apex predators in South America. Fossils from the ...

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

A mystery has been building in the Caribbean. Decades ago, fossilized teeth were discovered in Cuba dating to about 18 million years ago. They were small but tapered, sharp and serrated. They were the ...

The repeated evolution of huge birds is part of the dinosaurian legacy. Beaked birds were the only dinosaurs to have survived ...

Mosasaurs were some of the most fearsome apex predators to ever stalk the Cretaceous era’s oceans. And according to ...

WASHINGTON (Reuters) -After the demise of the dinosaurs following an asteroid strike 66 million ... nightmarish land-living ...

Mosasaurs were apex predators, reaching lengths up to 50 feet and weighing ... The maximum (weight) is about 20,000 pounds ...

Fossils reveal that sebecids, long-extinct land predators, survived far longer in the Caribbean than previously thought, ...

Mosasaurs were apex predators, reaching lengths up to 50 ... This is bigger than most dinosaurs walking around on land." Mosasaurs were marine reptiles; lizards that adapted to swimming and ...