parasaurolophus calling the herd

parasaurolophus dinosaur beak hadrosaur crested reptile walking mesozoic fossil prehistoric paleoart palaeontology animal creature duckbill herbivorous hadrosaurid extinct cretaceous kids herd line drawing education etching picture ornithopod trumpeting striped illustration isolated coloring book feathered accurate scientific science nonavian ink bipedal horned slow peaceful huge prey crest lambeosarid child