The Stegosaurus, whose name means "Roof Lizard" had the largest deltoid (upper leg) muscles of any dinosaur ever. These huge muscles allowed for extraordinary maneuverability. The Stegosaurus was capable of moving sideways, turning and spinning faster than any other animal of its time. This allowed it to successfully defend itself from predators such as the Allosaurus. As the Stegosaurus turned, it would stick it's spiked tail out and slash at the huge, deadly predators like a tank turret. This is how it got the nickname "Dino Tank"
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