MacFadden, Bruce, and Oscar Carranza-Castafieda. 2002. “Cranium of Dinohippus Mexicanus (Mammalia: Equidae) from the Early Pliocene (latest Hemphillian) of Central Mexico, and the Origin of Equus”. Bulletin of the Florida Museum of Natural History 43 (5):163-85. https://doi.org/10.58782/flmnh.tsom4551.