Centro de Estudios de Almejas Muertas: CEAM (translation: Center for the Study of Dead Clams) is a paleontology research group in the Department of Geosciences, University of Arizona.
Paul's Spur Field Trip: A field-oriented project on the Paul's Spur Mesozoic fossil patch reef complex near Bisbee, Arizona.
Southern Arizona Fossils: Fossil collection web site with photos and information on Peleozoic fossils.