Catherine L. Malone, Víctor Hugo Reynoso, Larry Buckley: Never judge an iguana by its spines: Systematics of the Yucatan spiny tailed iguana, Ctenosaura defensor (Cope, 1866). Molecular Phylogenetics and Evolution, Volume 115, Oktober 2017, S. 27–39, Doi: 10.1016/j.ympev.2017.07.010