A groundbreaking study has settled a 40-year debate: the 'tiny tyrant' fossil is not a juvenile Tyrannosaurus rex but a ...

The debate over Nanotyrannus’ identity is finally over. A remarkably preserved fossil proves it was a mature species, not a teenage T. rex. This discovery rewrites how scientists understand ...

The discovery, made in collaboration with North Carolina State University, is based on the “Dueling Dinosaurs” fossil, which was found in the Hell Creek Formation in Montana.

A new study reveals that fossils once believed to belong to a teenage Tyrannosaurus rex may actually belong to a separate species ...

Jane, the dinosaur fossil housed at Rockford's Burpee Museum of Natural History, may not be a Tyrannosaurus rex as previously ...

A fossil once locked in prehistoric combat has just rewritten one of paleontology’s longest-running debates — and upended what scientists thought they knew about Tyrannosaurus rex.

Paleontologists have examined an exceptionally well-preserved, near somatically mature tyrannosaur skeleton from the Hell Creek Formation of Montana.

"The fossil, part of the legendary 'Dueling Dinosaurs' specimen unearthed in Montana, contains two dinosaurs locked in ...

At the twilight of the age of dinosaurs, an agile and vicious predator named Nanotyrannus prowled western North America, resembling a smaller version of Tyrannosaurus - about a tenth the body mass - ...

A major shake-up in dinosaur paleontology reveals that what scientists have long called "Tyrannosaurus" is actually two ...

There are literally decades of research... based on a premise that this article overturns,” said one paleontologist.

Scientists have long debated whether a mysterious dinosaur excavated in the 1940s was a young T. rex or a distinct species.