Foot skeletons of small (young) hadrosaurid dinosaurs were compared with those of large (adult) hadrosaurids to assess the extent of pedal shape change during ontogeny. Foot skeletons of juvenile hadrosaurids were also compared with those of similar-sized adult, bipedal, non-hadrosaurian ornithischians to which the juvenile hadrosaurids were closer in size, to investigate the possibility that pedal shape change during hadrosaurid ontogeny would have been great enough for feet (and therefore footprints) of young hadrosaurids to have been more similar to those of small-bodied ornithischians than those of large adult hadrosaurids. Although possible allometric shape changes in hadrosaurid pedal proportions are detected, these are so subtle that the feet of young hadrosaurids are far more similar to those of adult hadrosaurs than those of small-bodied, non-hadrosaurid,ornithischians. Footprints made by conspecific hadrosaurids of different size and age are therefore likely to have been similar in shape, and footprints made by juvenile hadrosaurs are unlikely be misidentified as prints made by adults of smaller-bodied, more gracile, bipedal ornithischians.

将小型（年轻）鸭嘴龙科恐龙的足部骨骼与大型（成年）鸭嘴龙科恐龙的足部骨骼进行比较，以评估个体发育过程中足部形状变化的程度。幼年鸭嘴龙科的足部骨骼也与类似大小的成年鸭嘴龙类、双足类、非鸭嘴龙类（鸭嘴龙科的幼年体型更接近）的足部骨骼进行了比较，以研究鸭嘴龙科在个体发育过程中足部形状的变化对足部来说足够大的可能性与大型成年鸭嘴龙科相比，幼年鸭嘴龙科动物的足迹（因此脚印）与小型鸟臀目动物的相似度更高。尽管检测到鸭嘴龙类的脚部比例可能发生异速生长的形状变化，但这些变化是如此微妙，以至于幼年鸭嘴龙科的脚与成年鸭嘴龙的脚相比，与体型较小的鸭嘴龙的脚更相似，非鸭嘴龙科、鸟臀目。因此，不同大小和年龄的同种鸭嘴龙科动物留下的脚印很可能在形状上相似，而且鸭嘴龙幼年的脚印不太可能被误认为是体型较小、更纤细的双足鸟臀目成年鸭嘴龙科动物留下的脚印。