Tyrannosaurus rex Had Mammal-Like Body Temperature, Study Finds
A new analysis of Tyrannosaurus rex teeth indicates the ancient predator maintained a body temperature of about 36.3 degrees…
Tyrannosaurus rex Scavenged Duck-Billed Dinosaurs in Ancient Wyoming, Bite Marks Reveal
Thousands of fossilized bones from a Cretaceous-period bonebed in Wyoming, the United States, offer rare physical evidence that…
Giant Tyrannosaur Fossil Found in New Mexico
A large tyrannosaurid dinosaur may have stalked the floodplains of what is now New Mexico nearly 74 million…
Ancient Bite Marks Suggest Tyrannosaurs Were Not Just Hunters
New research led by Aarhus University paleontologists overturns the image of tyrannosaurs as pure apex predators. An analysis…
Nanotyrannus Represents Distinct Species of Tyrannosaurid Dinosaur, New Research Confirms
Nanotyrannus lancensis — long thought by many to be a teenage Tyrannosaurus rex — was in fact a…