The discovery of a new Psittacosaurus species from a braincase, how spinosaur brains adapted for eating fish, revisiting T. rex intelligence, and many more dinosaur brain updates

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Dinosaur of the day Tatankacephalus, the "bison-headed" armored dinosaur.

In dinosaur news this week:

A skull, including a braincase, is enough to tell us there’s a new Psittacosaurus species, Psittacosaurus houi
Studying dinosaur brains is an evolving field
Brain size varied in dinosaurs
Ceratopsians became less intelligent and had worse hearing and a worse sense of smell as they evolved to larger sizes
Ornithopods, and especially hadrosaurs, had bigger brains than we thought
Thescelosaurus had a powerful sense of smell, a sensitive vestibular system, but terrible hearing—all which may mean it was a burrower
A study of spinosaur brains and skulls helps show how they adapted to eat fish
Living birds have high EQs which they evolved from non-avian dinosaurs (although we don't really use EQs much anymore)
Shuvuuia may not have had specialized hearing
The enantiornithe Navaornis hestiae tells us a lot about bird brains
Unique brain shape in birds may be why birds survived non-avian dinosaurs after the mass extinction event
Parrots and humans may use similar brain mechanisms to produce complex sounds
Bird brains (and our brains) are wired for taking turns when communicating
T. rex had the intelligence of a baboon paper
Rebuttal to T. rex baboon intelligence paper

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I Know Dino: The Big Dinosaur Podcast