Growth rings in fossilized bones suggest the diminutive dinosaur, Nanotyrannus, would never grow up to become a T. rex — plus ...
Dinosaur Discovery on MSN
When the King Wasn’t Safe: Dinosaurs That Challenged T. rex
Even the apex predator of the Late Cretaceous had to watch its back. This investigation reveals the animals — from horned ceratopsians to massive ankylosaurs — that made hunting risky for T. rex. A ...
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