Radula
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The radula is an anatomical structure found in most mollusks, serving as their primary feeding tool. Often compared to a tongue, this minutely toothed, chitinous ribbon typically functions by scraping
Radula and individual tooth of the predatory ghost slug, Selenochlamys ysbryda
Microscopic detail of a docoglossan radula showing the denticles or teeth
Tracks made by terrestrial gastropods with their radulas, scraping green algae from a surface inside a greenhouse
Upper right: Mouth of a Planorbarius corneus freshwater snail with the radula visible.
Tooth
Videos
A tooth is a hard, calcified structure found in the jaws of many vertebrates and used to break down food. Some animals, particularly carnivores and omnivores, also use teeth to help with capturing or
Section through the ivory tusk of a mammoth
Buccal view of top incisor from Rattus rattus. Top incisor outlined in yellow. Molars circled in blue.
Buccal view of the lower incisor from the right dentary of a Rattus rattus
Lingual view of the lower incisor from the right dentary of a Rattus rattus