a paracone and protocone cusp connected by transverse crest. The third premolar has three cusps, paracone, metacone, and protocone, with the metacone and protocone connected by a crista oblique. There is a recorded hypocone on the third premolar. In the bottom premolars, the first premolar has one cusp although it can be bicuspid. The second and third premolar generally have 2-3 cusps, although the second bottom premolar has an entoconid and hypoconid and the third bottom premolar in belzebuth has five cusps with a small hypoconulid. Upper molars generally have four cusps although the third molar may not have a hypocone (might even have only two cusps). With the bottom molars, there are generally four cusps and a fifth cusp on the third molar. References External links ARKive - images and movies of the white-bellied spider monkey (Ateles belzebuth) white-bellied spider monkey Primates of South America Mammals of Brazil Mammals of Peru Mammals of Ecuador Mammals of Colombia Mammals of Venezuela Environment of Roraima White-bellied spider monkey white-bellied spider monkey White-bellied spider monkey