T. rex fossil is actually a species new to science, study says

They Want to Break T. Rex Into 3 Species. Paleontologists Aren't Pleased. - The New York Times

T. rex could have been 70% bigger than fossils suggest, new study shows

Teenage T. rex' fossils 'are a different dinosaur species

Why the sale of a T. rex fossil could be a big loss for science

What we thought we knew about T-rex was wrong, researchers say in new study

Like Godzilla, but actually real': Study shows T. rex numbered 2.5 billion

Tiny tyrannosaurs are separate species, not baby T. rexes, says study

World's largest ever Tyrannosaurus rex revealed by scientists, The Independent

Tyrannosaurus - Wikipedia