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Toothy Terror: Dinosaurs Like T. Rex had Unique Serrated Teeth

If you want to know the secret behind the success of Tyrannosaurus rex and its meat-eating dinosaur cousins, look no further than their teeth. Scientists on Tuesday unveiled a comprehensive analysis of the teeth of the group of carnivorous dinosaurs called theropods, detailing a unique serrated structure that let them chomp efficiently through the flesh and bones of large prey. Theropods included the largest land predators in Earth's history. They first appeared about 200 million...

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