Image: Tyrannosaurus rex, brain

Tyrannosaurus rex, brain

Tyrannosaurus rex brain fossil cast. USA, Late Cretaceous, 73 - 66 million years ago.

Robert Jones
© Australian Museum


For its body weight, the brain size of Tyrannosaurus rex was comparable to many modern reptiles. A cast of the brain reveals that it had enlarged olfactory lobes - the parts of the brain responsible for the sense of smell. This sense must have been important to T. rex.

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Tags brain, fossil cast, olfactory lobes, Tyrannosaurus rex, T. rex, senses, smell, scent, sensing, predator, Tyrannosauridae, theropods, Tyrannosauroidea,