the molars are located in the larynx in the mouth.
the molars are located in the larynx in the mouth.
where are the molars located in the mouth?
larynx
although omnivorous kangaroos lived in the past, modern macropods are herbivorous. some are browsers, but most are grazers and are equipped with appropriately specialised teeth for cropping and grinding up fibrous plants, in particular grasses and sedges. in general, macropods have a broad, straight row of cutting teeth at the front of the mouth, no canine teeth, and a gap before the molars. the molars are large and, unusually, do not appear all at once but a pair at a time at the back of the mouth as the animal ages, eventually becoming worn down by the tough, abrasive grasses and falling out. like many macropodiformes, early kangaroos had plagiaulacoids, but these converted into normal molars in more derived species. most species have four molars and, when the last pair is too worn to be of use, the animals starve to death. the dental formula for macropods is .
macropodidae
manatees have four rows of teeth. there are 6 to 8 high-crowned, open-rooted molars located along each side of the upper and lower jaw giving a total of 24 to 32 flat, rough-textured teeth. eating gritty vegetation abrades the teeth, particularly the enamel crown; however, research indicates that the enamel structure in manatee molars is weak. to compensate for this, manatee teeth are continually replaced. when anterior molars wear down, they are shed. posterior molars erupt at the back of the row and slowly move forward to replace these like enamel crowns on a conveyor belt, similarly to elephants. this process continues throughout the manatee's lifetime. the rate at which the teeth migrate forward depends on how quickly the anterior teeth abrade. some studies indicate that the rate is about 1 cm/month although other studies indicate 0.1 cm/month.
manatee