Holotype cranium and referred upper molars of K. blakei, a new genus of platyrrhine primate from the Miocene of Argentina. Frontal (A), right lateral (B), palatal (C), and posterior (D) views of MPM-PV 5000, and an illustration of the cheek teeth (E). (F) MPM-PV 1607 in occlusal view. (Scale bar, 1 cm.)