English, 13.01.2021 19:50, brianna4357

(1) A modern dentist would certainly enjoy having a hadrosaur as a client. (2) What a lot of business it would bring! (3) Though an adult human being has only 32 teeth, this duck-billed dinosaur of the Late Cretaceous Period had about 2,000 teeth, with 500 along each side of each jaw. (4) Unlike human beings, who grow two sets of teeth in their lifetimes, the hadrosaurs, like sharks and modern reptiles, had built-in replacement teeth. (5) In skeletal remains of the jaws of these toothy beasts, scientists have found entire banks of replacement teeth. (6) These stand-ins rested in a bed of cartilage, ready to substitute for teeth that became worn down or broke off—like having a built-in dentist! (7) That is a good thing because microwear studies of hadrosaur teeth have revealed tiny cracks and chips, leading some scientists to believe that the dinosaurs ate tough plants that damaged teeth.

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(1) A modern dentist would certainly enjoy having a hadrosaur as a client. (2) What a lot of busines...