Which Dinosaur Had 500 Teeth? Exploring the Fascinating Nigersaurus

Dinosaurs are fascinating creatures that roamed the Earth millions of years ago. From their massive size to their sharp teeth, these prehistoric animals never cease to amaze us. One interesting fact about dinosaurs is that some of them had an enormous number of teeth, far more than any living animal today. One of the most notable examples of this is the Nigersaurus, which had around 500 teeth in its mouth.

In this article, we will delve deeper into the fascinating world of the Nigersaurus and its unique teeth.


Which Dinosaur Has 500 Teeth?

Dinosaurs are a fascinating group of animals that existed on Earth millions of years ago. These prehistoric creatures came in all shapes and sizes, with different adaptations to help them survive in their environment. One of the most interesting features of dinosaurs is their teeth.

Some had sharp, serrated teeth for tearing meat, while others had blunt teeth for crushing plants. But among them all, the Nigersaurus stands out for its remarkable number of teeth.

What is the Nigersaurus?

The Nigersaurus is a genus of sauropod dinosaur that lived during the Late Cretaceous period, around 110 to 105 million years ago. It was a herbivorous dinosaur, meaning it only ate plants. The Nigersaurus was relatively small compared to other sauropods, with an estimated length of about 30 feet and a weight of around four tons.

Discovery of the Nigersaurus

The first fossils of the Nigersaurus were discovered in Niger in 1997 by a team of paleontologists from the State University of New York. The discovery was made in the Sahara Desert, which was once a lush, tropical environment. The Nigersaurus fossils were found alongside those of other dinosaurs, such as the Spinosaurus and Carcharodontosaurus.

Anatomy of the Nigersaurus


One of the most unique features of the Nigersaurus is its skull. Unlike other sauropods, which had large, boxy skulls, the Nigersaurus had a long, narrow skull that was only about two feet long. Its skull was also very light, with thin, delicate bones.


But the most remarkable feature of the Nigersaurus was its teeth. It had a massive number of teeth, with up to 500 teeth in its mouth at any given time.

The teeth were small and pencil-shaped, with ridges on the surface for grinding up plants. The teeth were also arranged in a straight line, with each tooth replacing the one in front of it as it wore down.

Why did the Nigersaurus have so many teeth?

The reason why the Nigersaurus had so many teeth is still a subject of debate among paleontologists. One theory is that the Nigersaurus used its teeth like a conveyor belt, constantly replacing old teeth with new ones to ensure a continuous supply of teeth for grinding up plants.

Another theory is that the Nigersaurus had a very high rate of tooth wear, which meant that its teeth wore down quickly and needed to be constantly replaced.

Diet of the Nigersaurus

The Nigersaurus was a herbivorous dinosaur, meaning it only ate plants. Its diet consisted mainly of ferns, horsetails, and other low-growing plants.

Because of its long, narrow skull and small teeth, the Nigersaurus was likely a picky eater. It probably browsed on low-growing plants close to the ground, rather than reaching up high for leaves on trees like some other sauropods.

How did the Nigersaurus use its teeth?

The teeth of the Nigersaurus were not very efficient at cutting or tearing tough plant material, but they were perfect for grinding up soft, low-growing plants.

The ridges on the teeth helped to break down the tough cellulose fibers found in plant material, allowing the Nigersaurus to extract as much nutrition as possible from its food.


The Nigersaurus is a fascinating dinosaur with a unique set of teeth. Its long, narrow skull and 500 small, pencil-shaped teeth make it stand out among other sauropods. While the exact reason for its large number of teeth is still a mystery, it is clear that the Nigersaurus was adapted to a specialized diet of soft, low-growing plants.