Iguanodon

Iguanodon was a hadrosaurid that lived 126-113 years ago. It was discovered by the geologist Gideon Mantell and first found William Harding Bensted in Tilgate Forest, England. It is found commonly in Bernissart, Belgium. The first fossil of Iguanodon were his teeth which, actually gave him, his name. Iguanodon gains the status of the first dinosaur discovered. Iguanodon had a lot of constructions but the one we know today is the right one. When first found, Iguanodon was thought as a heavy lizard which walked on four legs and had a horn on the top of his head. Than the other model sugests that Iguanodon walked with two legs and his tail staye down with the spike in his hand. Today we know Iguanodon could walk on two or four legs and his tail stayed up.

Iguanodons' name means iguana tooth. It is separated in two species: Iguanodon benissartensis and Iguanodon galvensis. It belongs to the Iguanodontidae family and part of hadrosaurids group.

Iguanodon had a size about 9-10 meters and a weight about 8300 kilos. Iguanodons' best-known feature is his spike in the hand. We don't know what use had, but two are the possibilities: he used them as weapon or to take the food from the low trees. His mouth had a shape like a ducks' mouth with teeth similar to iguanas' but, bigger. Unlike other hadrosaurids his teeth were big and few in number. His brain was little and he wasn't smart  but smarter than stegosaurus. Iguanodons made small groups to defend each other from predators. Its hand is not so flexible and his fingers weren't made for moving wich were separated from the conic spike. His legs were muscular, but not made for running. They had only three fingers. Iguanodon remains one of the best known hadrosaurids.