Page 28 - Everything You Know About Dinosaurs is Wrong

Dinosaurs weren’t very smart
One of the easiest ways to tell how intelligent animals are is to look at how big their brain is in comparison to the size of their body.
Although brains rot away after animals die, the bony braincases that surround them do fossilise!
Early palaeontologists cut dinosaur skulls into thin slices to see how big brain cavities (the holes the brains fit in) were, and others poured glass beads into skull braincases. The bigger the braincase, the bigger the brain!
In 2016, palaeontologists discovered parts of an IGUANODON’s actual fossil brain which helped them better understand what dinosaur brains looked like and how large they were.
Palaeontologists had thought that dinosaur brains were like modern
reptiles’ (which don’t completely fill the braincase) but we now know they were more like birds’ and so filled the animal’s braincase – which means they had slightly bigger brains than palaeontologists had previously thought!
The dinosaurs which had the largest brains for their body size were agile predators, such as STENONYCHOSAURUS and XIXIASAURUS, whose brains were similar in size to those of modern birds.
TYRANNOSAURUS BRAIN
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The brain stem that links to the body, controlling things like breathing
The area that controls balance and movement
The area that controls thoughts and memories
The area that controls the sense of smell
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