widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs, trachodon and iguanodon)
[ Syn: euronithopoda , suborder euronithopoda , ornithopoda , suborder ornithopoda ]
widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs, trachodon and iguanodon)
[ Syn: euronithopoda , suborder euronithopoda , ornithopoda , suborder ornithopoda ]