the normal physiologic values of the species, identifying potential future problems due to parasites, diseases, etc. which might threaten the population. The US captive population doubled in size in August 2006 with the hatching of 22 Jamaican rock iguanas at the Indianapolis Zoo. This was the first successful captive breeding and hatching outside of Jamaica. References Further reading Gray JE (1845). Catalogue of the Specimens of Lizards in the Collection of the British Museum. London: Trustees of the British Museum. (Edward Newman, printer). xxviii + 289 pp. (Cyclura collei, new species, pp. 190–191). Woodley JD (1980). "Survival of the Jamaican Iguana, Cyclura collei ". Journal of Herpetology 14 (1): 45–49. External links Profile on Cyclura.com The University of the West Indies Department of Life Sciences Endangered Jamaican Iguanas Hatched at the Indianapolis Zoo Saving the Jamaican Iguana:King of Reptiles(Jamaica) Profile on Kingsnake.com Jamaican Iguana making a comeback CNN Science Cyclura Reptiles of Jamaica Critically endangered fauna of North America Endemic fauna of Jamaica iguana,Jamaican Reptiles described in 1845 Taxa named by John Edward Gray