Fossils found 50 years ago were initially thought to belong to another species. Paleontologists have discovered a new species of dinosaur that was related to the infamous Tyrannosaurus rex. The dino ...

To understand why Tyrannosaurus rex ended up with such diminished limbs, we must first understand how natural selection functions. The long history of life on Earth is often viewed as a progression ...

For decades, a small tyrannosaur skull has divided paleontologists over whether it belonged to a separate species or a teenage Tyrannosaurus rex. New research anchored in the spectacular “Dueling ...

It's known as the "Dueling Dinosaurs" fossil: A triceratops and a tyrannosaur, skeletons entangled, locked in apparent combat right up until the moment of their mutual demise. Even in the Hell Creek ...

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.

Revolutionary new research has shattered long-held assumptions about dinosaur predation strategies, revealing that Tyrannosaurus rex’s bone-crushing bite force was just one of several successful ...

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of Tyrannosaurus rex to estimate how old the giant carnivores were when they died and ...

The largest-ever analysis of Tyrannosaurus rex fossils suggests the giant and fierce Cretaceous predator was a late bloomer, taking 35 to 40 years to reach maturity. The findings also further the ...

A comprehensive analysis of Tyrannosaurus rex fossils is surprising scientists with just how long these apex predators took to become big boys. Reading time 2 minutes The largest predator to ever walk ...

The piece illustrates the disparity of the Northern and Southern hemisphere’s evolution of terrestrial Cretaceous faunas after the Cretaceous Thermal Maximum. On the left, End Cretaceous Southern ...