Enigmatic Dinosaur Skull Sparks Debate over Tyrannosaur Evolution
A dinosaur skull first discovered in the 1980s was originally catalogued as a T. rex. Now some scientists argue it represents a new species of tyrannosaur and could shed light on where the massive animals originated
![Enigmatic Dinosaur Skull Sparks Debate over Tyrannosaur Evolution](https://static.scientificamerican.com/sciam/cache/file/D79F0A53-7EBE-4427-8054459FC7224705_source.jpg?#)
A dinosaur skull first discovered in the 1980s was originally catalogued as a T. rex. Now some scientists argue it represents a new species of tyrannosaur and could shed light on where the massive animals originated
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