A brachiosaur tooth found in South Korean sediments represents the first evidence that this huge, plant-eating dinosaur once roamed Asia, say the researchers who dug up the tooth.
Brachiosaur teeth are easy to recognize, explains Jong-Deock Lim, a paleontologist at the Natural History Museum at the University of Kansas in Lawrence. When the top and bottom teeth wore against each other, the crowns developed chisel-shaped surfaces that were self-sharpening.
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