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Typically, a turtle has 38 scutes on the carapace and 16 on the plastron, providing them fifty four in total. It is mainly designed of 50-60 bones and is composed of two pieces: the domed, dorsal (back again) carapace and the flatter, ventral (tummy) plastron. The lumps of a tortoise shell can tilt its overall body when it receives flipped in excess of, allowing it to flip again. Some turtle species have made huge and thick heads, making it possible for for increased muscle mass and stronger bites. Turtles that are carnivorous or durophagous (taking in hard-shelled animals) have the most effective bites. Turtles have been hunted for their meat, for use in classic medication, and for their shells. The shapes of turtle shells range with the variations of the unique species, and sometimes with sex. Some species, these kinds of as box turtles, deficiency the lateral extensions and instead have the carapace bones absolutely fused or ankylosed together. Turtle scutes are normally structured like mosaic tiles, but some species, like the hawksbill sea turtle, have overlapping scutes on the carapace.