Reevaluation of 'Teenage T. rex' Fossil Reveals a New Dinosaur Species

TL;DR
A fossil previously thought to be a juvenile Tyrannosaurus rex has been identified as a different species, Nanotyrannus, which was a fully grown, agile predator with distinct physical features, prompting a re-evaluation of tyrannosaur evolution.
- ‘Teenage T. rex’ fossil is actually a different species Nature
- ‘Dueling dinosaurs’ fossil forces a radical rethink of T. rex remains CNN
- The Case of the Tiny Tyrannosaurus Might Have Been Cracked The New York Times
- One of science’s biggest dinosaur debates may finally be settled The Washington Post
- Mysterious dinosaur skeleton thought to be a teenage T. rex is actually a rival species, researchers say CBS News
Want the full story? Read the original reporting
Read on Nature