Husband and wife pair Mary Ann and Gideon Algernon Mantell discovered the first Iguanodon fossils in 1822. Gideon, an amateur paleontologist, tried to determine what this ancient herbivore looked ...

Iguanodon was a herbivore that lived during the Cretaceous era in what is now western Europe. It was also the second dinosaur discovered (after the Megalosaurus); its remains were first discovered ...