MacFadden, Bruce J. (2005. szeptember 1.). „Diet and habitat of toxodont megaherbivores (Mammalia, Notoungulata) from the late Quaternary of South and Central America”. Quaternary Research64 (2), 113–124. o, Kiadó: Elsevier. DOI:10.1016/j.yqres.2005.05.003.