Cebupithecia
Cebupithecia is an extinct genus of New World monkeys from the Middle Miocene (Laventan in the South American land mammal ages; 13.8 to 11.8 million years ago).[1][2] Fossils of Cebupithecia were discovered in the "Monkey Beds" of the Honda Group, that has been dated to the Laventan, about 13.5 million years ago.Such behaviors may serve as a preadaptive model for the full-fledged evolution of below-branch tail suspension and prehensility seen in other New World primates.[7] The evolutionary split between Pitheciidae, of which Cebupithecia, and Callicebus, including Miocallicebus, also found in the Honda Group, has been placed at 15.2 million years ago.[9] It has been argued that the monkeys of the Honda Group were living in habitat that was in contact with the Amazon and Orinoco Basins, and that La Venta itself was probably seasonally dry forest.