Basic information on Identifying Dinosaur teeth by shape
Biology of Sharks and Rays - Information and Identification
Dinosaur & Sharks Teeth : A shark tooth is one of the numerous teeth of a shark. A shark tooth contains resistant calcium phosphate materials. Sharks continually shed their teeth; some Carcharhiniformes shed approximately 35,000 teeth in a lifetime, as well as replace them by producing thousands of more. There are four basic types of shark teeth: dense flattened, needle-like, pointed lower with triangular upper, and non-functional. The type of tooth that a shark has depends on its diet and feeding habits.
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Ichthyology at the Florida Museum of Natural History
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