Lucas, S. G., Hunt, A. P., and Heckert, A. B., 1995,Vertebrate Paleontology of the Robledo Mountains Member of the Hueco Formation, Dona Ana Mountains, New Mexico: In: Early Permian footprints and facies, New Mexico Museum of Natural History and Science Bulletin, n. 6, editors Lucas, S. G., and Heckert, A. B., p. 269-277.