Villaseñor, Ana Bertha, Carlos M. González-León, Timothy F. Lawton, and Martin Aberhan. 2018. “Upper Jurassic Ammonites and Bivalves from the Cucurpe Formation, Sonora (Mexico)”. Revista Mexicana De Ciencias Geológicas 22 (1):65-87. https://rmcg.unam.mx/index.php/rmcg/article/view/874.