Iguanodon

Iguanodon was a bulky herbivore that lived during the early cretaceous and was around 10 meters long and weighed about 3 tonnes to 3.5 tonnes on average. The Iguanodon's arms were long (up to 75% the length of the legs) and robust with rather inflexible hands built so that the three central fingers could bear weight. The thumbs were conical spikes that stuck out away from the three main fingers.They could have been used for defense, or for foraging for food. 


It's Fossil

This creature had a large, tall but narrow skull, with a toothless beak probably covered with keratin, and teeth like those of an iguana, but much larger and more closely packed, the legs were powerful, but not built for running, and each foot had three toes. The backbone and tail were supported and stiffened by ossified tendons, which were tendons that turned to bone during life so overall, in body structure, it was not too dissimilar from its later relatives, the hadrosaurids.