If there was a tooth fairy in the Cretaceous, dinosaurs kept it busy. Unlike humans, which lose just one set of teeth over a lifetime, dinosaurs often lost tens or even hundreds of sets. Plant-eating dinosaurs had to chew lots of tough material to sustain their large bodies, causing them to frequently replace their teeth. The research centered on several meat-eating dinosaurs, but Majungasaurus crenatissimus was really the star of carnivorous dinosaur dentition. Several complete skeletons, hundreds of fragmentary skeletons and tens of thousands of shed teeth have been found.

Source: New York Times December 06, 2019 18:56 UTC