non-hadrosaurid iguanodontian, a basal member of the Hadrosauroidea, though one closely related to the Hadrosauridae. The dinosaur's discovery conflicted with the idea that hadrosaurids evolved in Asia, but its reassessment as a less-derived iguanodontian has rendered this discrepancy less problematic. References External links Protohadros in the Dino Directory Iguanodonts Late Cretaceous dinosaurs of North America Fossil taxa described in 1998 Paleontology in Texas