Fossils believed to be juvenile T-rex actually belong to a different dinosaur species, first named more than 80 years ago – Nanotyrannus lancensis.
Researchers: Earlier study breaking T. rex into 3 different species was wrong
Did T. rex play with its food?
They Want to Break T. Rex Into 3 Species. Paleontologists Aren't Pleased. - The New York Times
Researchers: Earlier study breaking T. rex into 3 different species was wrong
Forget Extinct: The Brontosaurus Never Even Existed : NPR
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The T. Rex Species Saga, Explained
Everything we thought we knew about T. rex is wrong
The T. Rex Species Saga, Explained