McRoberts, Christopher A. “Late Triassic (Norian-Rhaetian) Bivalves from the Antimonio Formation, Northwestem Sonora, Mexico”. Revista Mexicana De Ciencias Geológicas, vol. 14, no. 2, Jan. 2019, pp. 167-7, https://rmcg.unam.mx/index.php/rmcg/article/view/1131.