Franz, Richard, and Irvy Quitmyer. “A Fossil and Zooarchaeological History of the Gopher Tortoise (Gopher Polyphemus) in the Southeastern United States”. Bulletin of the Florida Museum of Natural History, vol. 45, no. 4, Dec. 2005, pp. 179-00, doi:10.58782/flmnh.ldkh7976.