1. J. Alvarado-Ortega, and O. Carranza-Castañeda .2002a .The fossil fishes from Pliocene localities near Tula de Allende, Hidalgo, México. Abstracts, 62nd Annual Meeting, Society of Vertebrate Paleontology., Journal of Vertebrate Paleontology, 22 :(3 suppl.).32A .
2. A. R V. Arellano, 1951 .The Becerra Formation (latest Pleistocene) of central Mexico., Internacional Geologic Congress Report, 18thSession, Great Britain, 1948, 2 :55 –62 .
3. Comparative Cephalic and Appendicular Osteology of the Fish Family Catostomidae. Part I, Cycleptus elongatus (Lesueur)
4. K. Bryan, 1948 .Los suelos complejos y fósiles de la altiplanicie de México en relación con los cambios climáticos., Boletín de la Sociedad Geológica Mexicana, 13 :1 –20 .
5. Suckers (Fish, Catostomidae) from the Eocene of China account for the family’s current disjunct distributions