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Walking with Dinosaurs

How an Evolutionary Arms Race Created Bizarre Dino Designs

It’s grudge match time. Except that this one took place over millions of years.

Aired 06/16/2025 | Rating NR

Walking with Dinosaurs

How an Evolutionary Arms Race Created Bizarre Dino Designs

Special | 5m 32s

It’s grudge match time. Except that this one took place over millions of years.

It’s attack vs defense on an epic evolutionary scale. Utahraptor was the largest raptor to ever walk the Earth, honing its weapons and tactics to become a truly apex predator. And top of Utahraptors’ dinner wish list was Gastonia. But Gastonia were the spikiest dinosaurs to ever lived, covered in thick armor and developing their own deadly weapons with which to fight back.

Aired 06/16/2025 | Rating NR

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Narrator: Shane C. Campbell-Staton With Thanks: Utah State. University, Usu Eastern Prehistoric Museum, Utah Geological Survey, Bureau of Land Management Utah, Moab Field Office, Utah Dig Team Digital Producer &...

Walking with Dinosaurs

How an Evolutionary Arms Race Created Bizarre Dino Designs

Special | 5m 32s

It’s attack vs defense on an epic evolutionary scale. Utahraptor was the largest raptor to ever walk the Earth, honing its weapons and tactics to become a truly apex predator. And top of Utahraptors’ dinner wish list was Gastonia. But Gastonia were the spikiest dinosaurs to ever lived, covered in thick armor and developing their own deadly weapons with which to fight back.

Aired 06/16/2025 | Rating NR

Problems playing video?   | Closed Captioning Feedback

Report a Problem

Before you submit an error, please consult our Video Help page.

How to Watch Walking with Dinosaurs

Walking with Dinosaurs is available to stream on pbs.org and the free PBS App, available on iPhone, Apple TV, Android TV, Android smartphones, Amazon Fire TV, Amazon Fire Tablet, Roku, Samsung Smart TV, and Vizio.

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Narrator: Shane C. Campbell-Staton With Thanks: Utah State. University, Usu Eastern Prehistoric Museum, Utah Geological Survey, Bureau of Land Management Utah, Moab Field Office, Utah Dig Team Digital Producer &...

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