“Iguana Tooth” was initially found in 1822. Iguanodon was later described by English Geologist Gideon Mantell three years after its discovery and was the second dinosaur to be given a formal name. Iguanodon – along with Megalosaurus and Hylaeosaurus – were the first three dinosaurs ever introduced to the world. I. bernissartensis was found in 1878. There were as many as thirty-eight skeletons of this animal discovered and Alphonse Briart, the supervisor of the coal mine, allowed these animals to be unearthed. I. bernissartensis was the most famous of Iguanodon specimens due to the fact of how well preserved they were and the fact they were the first complete dinosaur found. This Iguanodon weighed in at 3.5 tons (3.08 tonnes). The ornithopod grew to be as long as 10 meters (32.8 feet) in length, with even some of these animals growing up to 13 meters (42.6 feet) in length. Iguanodon was gifted with the ability to be a bipedal and quadrupedal dinosaur. Eric Kirby encountered a herd of these – even befriended a young Iguanodon – when he was stranded on Isla Sorna for eight weeks.