Researchers say ‘Tyrannosaurus’ may have been three species instead of just one - EL PAÍS in English

Researchers say ‘Tyrannosaurus’ may have been three species instead of just one - EL PAÍS in English
A study based on femurs and incisor teeth posits that ‘T.rex’ had two more relatives, but some scientists are contesting the claim because of the small size of the sample
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