 Iguanodon mantelli described by Christian Erich Hermann von Meyer in 1832 , was based on the same material as I. anglicus and is an objective junior synonym of the latter . Several taxa , including the holotype of Dollodon and Mantellodon , but also the dubious hadrosauroid Trachodon cantabrigiensis the hypsilophodont Hypsilophodon , and Valdosaurus , were previously mis @-@ assigned to I. mantelli . 
 Iguanodon mantelli described by Christian Erich Hermann von Meyer in 1832 , was based on the same material as I. anglicus and <a href='drop_aux' title='1'><mark>is</mark></a>an objective junior synonym of the latter . Several taxa , including the holotype of Dollodon and Mantellodon , but also the dubious hadrosauroid Trachodon <a href='uninflect' title='2'><mark>cantabrigiensis</mark></a> the hypsilophodont Hypsilophodon , and Valdosaurus , <a href='uninflect' title='3'><mark>were</mark></a> previously mis @-@ assigned to I. mantelli . 
Iguanodon mantelli described by Christian Erich Hermann von Meyer in 1832 , was based on the same material as I. anglicus and an objective junior synonym of the latter . Several taxa , including the holotype of Dollodon and Mantellodon , but also the dubious hadrosauroid Trachodon cantabrigiensied da hypsilophodont Hypsilophodon , and Valdosaurus , was previously mis @-@ assigned to I. mantelli .