 Iguanodon was not part of the initial work of the dinosaur renaissance that began with the description of <unk> in 1969 , but it was not neglected for long . David B. <unk> 's work on ornithopod feeding mechanisms provided a better understanding of how it fed , and David B. Norman 's work on numerous aspects of the genus has made it one of the best @-@ known dinosaurs . In addition , a further find of numerous Iguanodon skeletons , in <unk> , <unk> @-@ <unk> , Germany , has provided evidence for <unk> in this genus , as the animals in this <unk> restricted find appear to have been killed by flash floods . At least 15 individuals , from 2 to 8 metres ( 6 @.@ 6 to 26 @.@ 2 ft ) long , have been found here , although at least some of them are gracile <unk> and belong to the related Mantellisaurus or Dollodon ( described as I. atherfieldensis , at that time believed to be another species of Iguanodon ) . 
