Reptiles and Amphibians of the Sonoran Desert: A guide to 41 of the most commonly encountered reptiles and amphibians native to the Sonoran Desert region of the southwestern United States. Some of the area's rare and more interesting species have been included to underscore the biological importance of this interesting and diverse biome. The most current taxonomic and common names are used in this guide to assist the enthusiast in keeping abreast with the many changes in this dynamic field. This guide covers the following National Parks, Monuments, Wildlife Refuges, and State Parks; Joshua Tree, Organ Pipe Cactus, Saguaro, Sonoran Desert, Ironwood, Coachella Valley, Cabeza Prieta, Kofa, Anza-Borrego, Boyce Thompson Arboretum, South Mountain, in addition to many wildernesses and other protected areas.