New fossil materials of the earliest new world monkey, Branisella boliviana, and the problem of platyrrhine origins

M Takai, F Anaya, N Shigehara… - American Journal of …, 2000 - Wiley Online Library
Branisella boliviana, from the Late Oligocene of Salla, Bolivia, is the oldest fossil platyrrhine
monkey discovered. To date, several fossil specimens of Branisella have been obtained, but
most of them are fragmentary dentitions, so the animals craniodental morphology is still
obscure. During the 1996 field season a pair of upper and lower jaw fragments and another
nearly complete mandible were recovered. These new fossil materials reveal the following
morphological features in Branisella: 1) P2 is much smaller than P3, 4, whereas P2 is …