Pérez-Crespo, Víctor Adrián, et al. “Diet and Habitat of Unique Individuals of Dinohippus Mexicanus and Neohipparion Eurystyle (Equidae) from the Late Hemphillian (Hh3) of Guanajuato and Jalisco, Central Mexico: Stable Isotope Studies”. Revista Mexicana De Ciencias Geológicas, vol. 34, no. 1, Apr. 2017, pp. 38-44, doi:10.22201/cgeo.20072902e.2017.1.470.