Researchers have controversially argued there is enough variation in samples to point towards three species of Tyrannosaur, not one.
Tyrannosaurus Skeletal Remains Reveal T. rex May Have Been 3 Distinct Species
Should T. rex be 3 species? New study sparks fierce debate.
Tyrannosaurus Remains Hint at Two Possible Species Distinct from T. rex
Tyrannosaur, Size, Species, & Facts
Tyrannosaurus rex would not have been able to outrun a speedy human, research suggests, The Independent
Tyrannosaurus rex may have been three separate species, say scientists, rex
T-rex reigns as king of dinosaurs
Scientists propose Tyrannosaurus had three species, not just 'rex
Researchers now have an estimate for just how many T. rex once roamed Earth
Should T. rex be 3 species? New study sparks fierce debate.
