They found a gap of about a centimeter between each vertebra, indicating that there may have been a disk or other material between them, allowing more flexibility and meaning the animal was actually longer than shown in a museum. Skin impressions have been found from the following hadrosaurs: "Edmontosaurus annectens", "Corythosaurus casuarius", "Brachylophosaurus canadensis", "Gryposaurus notabilis", "Parasaurolophus walkeri", "Lambeosaurus magnicristatus", "Lambeosaurus lambei", "Saurolophus osborni," and "Saurolophus angustirostris".