Nanotyrannus and Tyrannosaurus both were members of a lineage of meat-eating dinosaurs called tyrannosaurs, but were not the ...

Paleontologists have long debated whether small tyrannosaurs were their own species or simply teenage T. rexes. This debate ...

What if everything we know about T. rex growth is wrong? A complete tyrannosaur skeleton has just ended one of paleontology's ...

A Montana fossil reveals that Nanotyrannus, once thought to be a young T. rex, was actually a full-grown predator and it's ...

For more than three decades, paleontologists have argued over whether a lithe predatory dinosaur called Nanotyrannus ever ...

A new specimen of one of the most controversial species of dinosaur has the potential to overturn decades of research on the ...

New research confirms the Nanotyrannus dinosaur was not a young T. rex, but a separate species, reshaping our view of ...

Tyrannosaurus rex earned its “Tyrant King” status partly due to its enormous size. An adult T. rex could easily grow over ...

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

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

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 ...