T. rex ‘not as clever as previously claimed’
Image of a T. rex skeletal cast at Senckenberg Museum Frankfurt, Germany. T. rex lived at the end of the Cretaceous (about 66 million years ago) and was exclusive to western North America. (Kai R. Caspar via SWNS)
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The brain size and structure in dinosaurs show they behaved like today's crocodiles and lizards.