Norman, David B

David B. Norman is a British paleontologist who has extensively studied ornithischian clades, especially the genus Iguanodon. He noted that Iguanodon's beak structure would let it eat a wide range of plants, not simply soft plants as was thought before. He also realized that Iguanodon's tail was held horizontally, suggesting that it walked on four legs. He has also written many books about dinosaurs, including The Illustrated Encyclopedia of Dinosaurs (1985).