I Know Dino: The Big Dinosaur Podcast cover image

The first long-necked dinosaur

I Know Dino: The Big Dinosaur Podcast

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The Evolution of Pneumaticity in the Early Dinosaurs

Ornithischians didn't evolve pneumaticity. This is sort of a reverse of what we'd expect it to be if the earliest dinosaurs and earliest Ornithodirans had this feature, we'd expect that it was something that those Ornithischians lost. There may be some underlying bone structure that made it particularly an easier step to get to pneumaticities. And so, you're, you know, seratopsians and your hadrosauras and stuff just didn't bother with it for whatever they have normal bones.

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