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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 (May 2016), 565–583. DOI:https://doi.org/10.11646/zootaxa.4111.5.3.