Shockey, B.J., Billet, G. & Salas-Gismondi, R. (2016)

A new species of Trachytherus (Notoungulata: Mesotheriidae) from the late Oligocene (Deseadan) of Southern Peru and the middle latitude diversification of early diverging mesotheriids

. Zootaxa, 4111 (5), 565–583.