Iguanodon (Cretaceous)

Iguanodon is a large, bulky Cretaceous period herbivorous dinosaur of the Iguanodontidae family that inhabited planet Earth 140-120 million years ago. It lived on present England and Belgium territories.
Iguanodon became a pioneer from the dinosaurs’ world and its appearance was the first to be reconstructed based on recovered remains. The reptile weighed 5 tonnes and was 4 metres in height and 10 metres in length. It used all four limbs for locomotion and sometimes could shift to bipedality to reach the topmost tree branches and rich high growing foliage.
Iguanodon had unique limbs with five-toed forelimbs. The first sharp claw shaped toe served as a defense against predators, three central toes and the thumbs stuck out away from the three main digits allowing for leaf plucking. The reptile was a fast runner. To do that, it leaned on hind limbs and rapidly propelled its huge carcass at a speed of up to 35 km/h.
Iguanodon’s metre-long head resembled that of a horse. The snout ended up with a beak used for plucking and nibbling small bushes. The jaw contained more than 50 teeth resembling those of modern iguanas, but much larger. This resemblance gave the dinosaur its name. Due to the presence of back teeth together with front ones, it thoroughly chewed food. Perhaps this skill became a cause for Iguanodons population rapid growth.