The Short Answer
Nigersaurus is the dinosaur most often associated with having over 500 teeth. It was a herbivore — a plant eater — and used those hundreds of small teeth to crop low-growing vegetation close to the ground, much like a lawnmower.
Why Did Nigersaurus Have So Many Teeth?
The "500 teeth" fact comes from how Nigersaurus teeth were arranged and replaced. Instead of having a few big teeth, it had many small teeth organized in rows — known as dental batteries.
- Many teeth at once: Rows of small teeth helped it crop plants efficiently.
- Fast replacement: As teeth wore down, new ones were ready behind them — replaced every two weeks.
- Plant-eating tool: Think of it like a specialized "plant trimmer" mouth.
Key Facts About Nigersaurus
| Feature | Detail |
|---|---|
| Tooth count | Over 500 (active + replacement) |
| Tooth replacement rate | Every ~14 days |
| Diet | Herbivore — ferns, horsetails, ground plants |
| Length | ~30 feet (9 metres) |
| Weight | ~2 tons (similar to an African forest elephant) |
| Period | Cretaceous, ~110 million years ago |
| Discovered | Republic of Niger, West Africa |
| Named by | Paleontologist Paul Sereno, 1999 |
About the Name
The name Nigersaurus comes from Niger, the country in West Africa where the fossils were discovered, and saurus from Greek meaning "lizard." It is a scientific name used in paleontology and is not related to any modern slurs. We include this clarification because many people encounter this name online and the scientific origin matters.
Was Nigersaurus Dangerous?
No. Nigersaurus was a herbivore and is not considered dangerous. It likely spent most of its time feeding on low-growing plants rather than hunting. Despite its impressive tooth count, those 500+ teeth were designed for munching plants — not for predation.