1. P. Beland, and D. A. Russell .1978 .Paleoecology of Dinosaur Provincial Park (Cretaceous), Alberta, interpretations fom the distribution of articulated vertebrate remains., Canadian Journal of Earth Science, 15 :1012 –1024 .
2. Long-Term Changes in a Population of Alligator mississippiensis in South Carolina
3. SAUROPODAN GASTROLITHS
4. A. J. Charig, and A. C. Milner .1997 .Baryonyx walkeri, a fish-eating dinosaur from the Wealden of Surrey., Bulletin of the Natural History Museum, 53 :11 –70 .
5. An exceptionally well-preserved theropod dinosaur from the Yixian Formation of China