Polyphyodont
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A polyphyodont is any animal whose teeth are continually replaced. In contrast, diphyodonts are characterized by having only two successive sets of teeth.
Nile crocodile (Crocodylus niloticus)
Shark
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Sharks are a group of elasmobranch cartilaginous fishes characterized by a ribless endoskeleton, dermal denticles, five to seven gill slits on each side, and pectoral fins that are not fused to the he
Polyphyodont
…replaced. In contrast, diphyodonts are characterized by having only two successive sets of teeth. Polyphyodonts include most toothed fishes (most notably sharks), many reptiles such as crocodiles and geckos, and most other vertebrates, with mammals being the main exception (though not absolute). New, permanent…
Corl 0207
Fossil shark tooth (size over 9 cm or 3.5 inches) with crown, shoulder, root and root lobe
A collection of Cretaceous shark teeth
The teeth of tiger sharks are oblique and serrated to saw through flesh