Dinosaurs
Iguanodon
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Iguanodon was once the one of the common dinosaurs. It was also one of the
earliest dinosaurs to be discovered and named. Its name means Iguana Tooth in
Greek.

What did it look like?
Iguanodon was a big dinosaur. It grew to be thirty feet long and had a bulky body.
Its neck was long and it had a long tail and a beak. The mouth had teeth in the
cheeks toward the back and a sharp beak at the front. Iguanodon usually walked
on four legs, but could stand on two if it wanted to reach high. It had four fingers
and a bony cone-shaped spike on each hand. Its hind feet had three toes with
hoof-like nails.

What did it eat?
Iguanodon was a plant-eater. It ate cycads and conifers as well as other plants. It
used its teeth to chew its food, one of the first dinosaurs to do so.

When did it live?
Iguanodon lived between 130 and 65 million years ago.

Where did it live?
Everywhere! Its habitats were: beaches, plains, forests, mountains, deserts and
swamps. It lived in North and South America, Asia, Australia, Belgium, Spain and
England.

How was it discovered?
A single Iguanodon tooth was discovered in 1822, one of the earliest dinosaur
discoveries. The dinosaur was named Iguanodon in 1825 by Dr. Gideon Mantell,
because its teeth were similar to the modern day iguana.

Why does it have a spike on its hand?
Iguanodon had a large spike on both of their hands, where our thumb would be.
Originally, it was thought to go on the Iguanodon's nose, like a rhino horn. Later it
was discovered that the spike actually goes on the hand. But what was it used
for? Some say it could have been used to defend against attacking predators.
Others say that the spike was used in fights when two rival Iguanodon met.

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