The Tyrannosaurus Rex, commonly abbreviated as T. rex, was a large carnivorous dinosaur that lived approximately 68 to 66 million years ago during the late Cretaceous period. It is one of the most well-known and iconic prehistoric animals, characterized by its massive body, ferocious jaws with sharp teeth, and relatively short arms. T. rex stood about 12-13 feet tall at the hips and stretched up to 40 feet in length, weighing around 9 tons. This dinosaur was primarily a predator, though some evidence suggests scavenging behavior as well. Fossils of T. rex have been primarily found in North America, contributing to a rich body of research that helps scientists understand the ecology and biology of large theropod dinosaurs. The Tyrannosaurus Rex remains a central figure in both scientific research and popular culture, epitomizing the public’s fascination with dinosaurs.
Newly discovered Tyrannosaurus mcraeensis, potentially T. rex’s closest relative, lived 71-73 million years ago in southern Laramidia, indicating the early evolution of giant tyrannosaurs. A…
Restudy of fossils collected in New Mexico digs up key clues about T. rex’s origins in North America. A new study published in Scientific Reports…
Nanotyrannus was a smaller, longer-armed relative of T. rex, with a narrower snout. A new analysis of fossils believed to be juveniles of T. rex…
According to new research, large dinosaur predators, such as Tyrannosaurus rex, evolved different shapes of eye sockets to better deal with high bite forces. While…
T. rex’s short arms may have lowered risk of bites during feeding frenzies. A new hypothesis suggests that the T. rex’s short arms may have…
A new analysis of Tyrannosaurus skeletal remains reveals physical differences in the femur, other bones, and dental structures across specimens that could suggest Tyrannosaurus rex specimens need to…
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 (9 meters) long, and…