Anza-Borrego Desert State Park Paleontology  www.anzaborregopaleo.org

 Anza-Borrego Desert State Park www.parks.ca.gov/?page_id=638

 The Anza-Borrego Foundation  www.theabf.org

Desert USA – SW desert resources www.desertusa.com

 San Diego Natural History Museum www.sdnhm.org/research