Benjamin Waterhouse Hawkin and his Hadrosaurus foulkii, the world's first mounted dinosaur skeleton. From 'Sketches of Creation' by Winchell 1870 engraved from photographs taken around 1868. The discovery of the first american dinosaur H. foulkii (1858) revolutionised earlier concepts of their form and lifestyle. Waterhouse Hawkins was keen to update his designs from the Crystal Palace dinosaurs to reflect this in New York's proposed Paleozoic park. The reconstruction was built by Hawkins under the advice of Joseph Leidy and E.D. Cope, then put on display at the Academy of Natural Sciences in Philadelphia in 1868. It caused a sensation with nearly 100, 000 visitors, and started dinomania in the USA. Such mounted dinosaur skeletons would henceforth be the mainstay of natural history museums worldwide.