Location of selected Actinemys records discussed in the text and in Table 2. The approximate boundary of the Mojave Desert is outlined with gray dashed lines. Not all fossil records are shown (e.g., Anza Borrego Desert State Park, California and Golden Shores, Arizona). Modern records include early historical accounts discussed in the text as well as more recent records. Not all recent records or trapping locations are shown to protect sensitive populations of Actinemys. Some locations are approximations based on lack of information available. The captive population at the California Desert Discovery Center in Barstow, California is not labeled.