Partial skeletons and even complete fossilized remains have been discovered. Fossils can be both the direct remains or imprints of organisms and their skeletons. Uhtred makes sure they do find the bones, digging up one of the skeletons himself. The skeletons were some of the first complete dinosaur skeletons known. They find and enter a chamber containing thirteen crystal skeletons, the tenth missing its skull. He found the ancient shaft graves with their royal skeletons and spectacular grave goods. They discovered fifteen vessels surrounding male skeletons in the royal tomb. The queue passed through dungeons with human skeletons, torches and cobwebs. Calcifying organisms use calcium carbonate to produce shells, skeletons, and tests. Many have fluid-filled, hydrostatic skeletons, like jellyfish or worms. Particularly related to fractures are cases of trauma seen on many skeletons of Neanderthals. Land vertebrates required another source of vitamin D other than plants for their calcified skeletons. The Museum of Osteology houses more than 300 real animal skeletons. These organisms are also able to heal faster than organisms that contain hard skeletons. During excavations over 120 skeletons were discovered.