KINGDOM:
Animalia ↳ PHYLLUM:
Chordata
↳ CLASS:
Reptilia
↳ SUBCLASS: Diapsida
↳ INFRACLASS: Archosauromorpha
↳ SUPERORDER: Dinosauria
↳ ORDER:
Ornithischia ✝
↳ SUBORDER: Ornithopoda
↳ FAMILY:
Hadrosauridae ✝
↳ GENUS:
Hadrosaurus ✝
Species within the genus Hadrosaurus:
Hadrosaurus foulkii ✝