Growth rings in fossilized bones suggest the diminutive dinosaur, Nanotyrannus, would never grow up to become a T. rex — plus ...

Paleontologists have long debated whether small tyrannosaurs were their own species or simply teenage T. rexes. This debate just got a major shake-up. Reading time 3 minutes Researchers claim to have ...

Debate kicked off in 1988 when a single small tyrannosaur skull discovered four decades earlier was given its own species name: Nanotyrannus lancensis. It carried some features which differed from T.

The discovery of a small dinosaur has ended one of paleontology’s longest-running debates, revealing that Nanotyrannus was not just a teenage T. rex – but a distinct species within the Tyrannosaur ...