The Royal Chiral Museum of Paleontology in Alberta has discovered material from a fossilized Tyrannosaurus rex's stomach. The rock fragments were difficult to extract from the fossilized bones. It took years for the technicians. According to researchers, this fossil is approximately 75.3 million years old. When it was brought to the museum to be cleaned, the contents were discovered to be stored in the stomach. The small toe bones were discovered in the intestine while cleaning. According to the researchers, determining who the bones belonged to was extremely difficult. It was discovered to be similar to Citips elegans, a small bird-like dinosaur.