Fossils paleontologists initially thought belonged to a juvenile Tyrannosaurus rex actually belong to a new species of ...

The Nanotyrannus's small skull has been the source of debate among dinosaur experts for at least four decades, according to ...

Palaeontologists have argued for decades over whether certain fossils are young Tyrannosaurus rex or another species entirely ...

A new look at the "Dueling Dinosaurs" fossil reveals that Tyrannosaurus rex was not the only tyrannosaur roaming the land.

For many years, paleontologists have debated about whether there was a smaller relative of the Tyrannosaurus rex, or if those ...

A new analysis of a controversial tyrannosaur fossil reveals the dinosaur wasn't a teenage version of T. rex as once thought, ...

Researchers say they have uncovered a case of mistaken identity and found evidence of a species called Nanotyrannus lancensis.

Debate kicked off in 1988 when a single small tyrannosaur skull discovered four decades earlier was given its own species ...

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

The “dueling dinosaur” fossil still leaves more questions than answers as scientists now attempt to determine their causes of ...

A groundbreaking analysis of the ‘Dueling Dinosaurs’ fossil has finally resolved a long-standing mystery in the world of ...