The dinosaur with 500 teeth is called **Nigersaurus**. It lived about 120 million years ago and was a herbivore. Nigersaurus had a wide muzzle filled with more than 500 teeth, which were replaced at a rapid rate: around every 14 days. The jaws may have borne a keratinous sheath. Unlike other tetrapods, the tooth-bearing bones of its jaws were rotated transversely relative to the rest of the skull, so that all of its teeth were located far to the front.
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- Nigersaurus had **more than 500 teeth**.
