Theiophytalia is a genus of herbivorous iguanodontian dinosaur from the lower Cretaceous period (Aptian-Albian stage, about 112 million years ago) of Colorado, USA.
Theiophytalia refers to a genus of herbivorous iguanodontian dinosaurs that existed during the early Cretaceous period (Aptian-Albian stage, around 112 million years ago), specifically in the state of Colorado, USA.