Researchers have controversially argued there is enough variation in samples to point towards three species of Tyrannosaur, not one.
Mistaken identity? Scientists say this dinosaur isn't T-rex
T. rex grew beefier than museum fossils suggest
Tyrannosaurus rex was a sensitive lover, new dinosaur discovery suggests, Dinosaurs
Is the T. Rex Three Different Species?
T. Rex might actually be three separate species: study
New controversial study says the T. rex was actually three species
Study Claiming T. rex Was Three Separate Species Receives Rebuttal
Billions of T. rex likely roamed the Earth, paleontologists report
Researchers now have an estimate for just how many T. rex once roamed Earth
Newly discovered, primitive cousins of T. rex shed light on the end of the age of dinosaurs in Africa
Dinosaur Bone Study Reveals That Not All Giants Grew Alike
Controversial idea that T. rex was three species comes under fire
