 Early fossil remains were fragmentary , which led to much speculation on the posture and nature of Iguanodon . Iguanodon was initially portrayed as a quadrupedal horn @-@ nosed beast . However , as more bones were discovered , Mantell observed that the forelimbs were much smaller than the hindlimbs . His rival Owen was of the opinion it was a stumpy creature with four pillar @-@ like legs . The job of overseeing the first lifesize reconstruction of dinosaurs was initially offered to Mantell , who declined due to poor health , and Owen 's vision subsequently formed the basis on which the sculptures took shape . Its bipedal nature was revealed with the discovery of the Bernissart skeletons . However , it was depicted in an upright posture , with the tail dragging along the ground , acting as the third leg of a tripod . 
 Early fossil remains <a href='uninflect' title='1'><mark>were</mark></a> fragmentary , which led to much speculation on the posture and nature of Iguanodon . Iguanodon was initially portrayed as a quadrupedal horn @-@ nosed beast . However , as more bones <a href='uninflect' title='2'><mark>were</mark></a> discovered , Mantell observed that the forelimbs <a href='uninflect' title='3'><mark>were</mark></a> much smaller than the hindlimbs . His rival Owen was of the opinion it was a stumpy creature with four pillar @-@ like legs . The job of overseeing the first lifesize reconstruction of dinosaurs was initially offered to Mantell , <a href='null_relcl' title='4'><mark>who</mark></a>declined due to poor health , and Owen <a href='null_genetive' title='5'><mark>'s</mark></a>vision subsequently formed the basis on which the sculptures took shape . Its bipedal nature was revealed with the discovery of the Bernissart skeletons . However , it was depicted in an upright posture , with the tail dragging along the ground , acting as the third leg of a tripod . 
Early fossil remains was fragmentary , which led to much speculation on the posture and nature of Iguanodon . Iguanodon was initially portrayed as a quadrupedal horn @-@ nosed beast . However , as more bones was discovered , Mantell observed dat the forelimbs was much smaller den da hindlimbs . His rival Owen was of tdaopinion it was a stumpy creature wid 4 pillar @-@ like legs . The job of overseeing thdairst lifesize reconstruction of dinosaurs was initially offered to Mantell , declined due to poor health , and Owen  vision subsequently formed the basis on which thedaulptures took shape . Its bipedal nature was revealed with the dacovery of the Bernissart skeletons . However , it was depicted in an upright posture , wwitthe tail draggin along the ground , acting as the third leg of a tripod .