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Tyrannosaurus Rex in the jungle. Generative AI.

Was the Tyrannosaur as Smart as a Monkey? Assessing a New Claim

One researcher argues that, based on bird studies, the huge predators may have had many more brain cells than we have supposed

Vanderbilt University neuroscientist Suzana Herculano-Houzel tells us, in a recent paper, that tyrannosaurs had similar numbers of brain neurons as “primates.” But how would we know? Herculano-Houzel stats with the assumption that dinosaurs are descended from birds and makes a distinction between the theropod dinosaurs like the tyrannosaur and others: From that assumption, Herculano-Houzel realized that theropods in particular had a similar correlation between body mass and brain size to pre-impact birds, or basal birds. From there, she used the neuron count of modern birds like emus and ostritches and applied the same rules of scaling to figure out how many neurons theropods like the T-Rex may have had. Frank Landymore, “In terrifying news, big brained T-rex may have been Read More ›