Hypsitherium is an extinct genus of Mesotheriidae that lived 4.0 to 3 million years ago. It is known from the Miocene to Pliocene Inchasi fossil locality in Bolivia. Hypsitherium was a scansorial herbivore, and its name translates to "high beast."[1][2]
B. J. MacFadden, F. Anaya, and J. Argollo. 1993. Magnetic polarity stratigraphy of Inchasi: a Pliocene mammal-bearing locality from the Bolivian Andes deposited just before the Great American Interchange. Earth and Planetary Science Letters 114(2-3):229-241