Grismer, L. Lee. “Spiny-Tailed Iguanas, Insular Evolution, and Seri Indians: How Long Does It Take to Make a New Species and Does It Matter Who Makes It?”. Iguana Times, vol. 9, no. 1-2, Mar. 2002, pp. 3-8, https://journals.ku.edu/iguanatimes/article/view/16921.