The dinosaur with 10,000 teeth is not a known species. However, Nigersaurus is a dinosaur with more than 500 replaceable teeth, which is the highest number of teeth of any known dinosaur. The teeth of Nigersaurus were highly asymmetrical, with enamel ten times thicker on the outwards facing side than on the inner side, and they erupted in unison, not each column individually. The dinosaur had a delicate skull and an extremely wide mouth lined with teeth that were especially adapted for browsing plants close to the ground. The name Nigersaurus comes from the country in Africa where it was discovered.