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University of Tsukuba researchers have described a new apex predator from the lower Upper Cretaceous of Central Asia, Ulughbegsaurus uzbekistanensis, which coexisted with a smaller…
Tyrannosaurus rex, the fearsome predator that once roamed what is now western North America, appears to have had an East Coast cousin. A new study…
New University of Maryland study suggests that everywhere tyrannosaurs rose to dominance, their juveniles took over the ecological role of medium-sized carnivores. A new study…
Juvenile tyrannosaurs tested their chops as they grew to become bone crushers like their parents. Jack Tseng loves bone-crunching animals — hyenas are his favorite…
Humans and animals have a preferred walking speed. This is, in part, influenced by the amount of energy required: they prefer to walk at the…
Over their entire late-Cretaceous reign, the total number of Tyrannosaurus rex that ever lived on Earth was roughly 2.5 billion individuals, according to a new…
Analysis of what’s known about the dinosaur leads to conclusion there were 2.5 billion over time. How many Tyrannosaurus rexes roamed North America during the…
By closely examining the jaw mechanics of juvenile and adult tyrannosaurids, some of the fiercest dinosaurs to inhabit Earth, scientists led by the University of…
Research finds leg length gave giant predatory dinosaurs the advantage of efficiency, not speed as previously thought. Long legs may make good runners, but they’re…
A study of two juvenile T.rex skeletons show how the large predator grew up. Without a doubt, Tyrannosaurus rex is the most famous dinosaur in…
Tyrannosaurus rex, one of the largest meat-eating dinosaurs on the planet, had an air conditioner in its head, suggest scientists from the University of Missouri,…
A newly discovered ancestor of Tyrannosaurus rex was discovered recently in China. Yutyrannus huali was covered in feathers, was 30 feet long, and weighed 3,000…