Prehensile tailed monkeys are the largest of the New World Monkeys. There are 24 species in the family Atelidae, including 10 species of howler monkeys (Alouatta), 7 spider monkeys (Ateles), 2 muriquis (Brachyteles), 4 woolly monkeys (Lagothrix), and 1 yellow-tailed woolly monkey (Oreonax). All atelids have prehensile tails that are sensitive and used for grasping objects.
- Groves, C. 2001. Primate Taxonomy. Washington, D.C.: The Smithsonian Institution Press.
- Nowak, R. 1991. Walker's Mammals of the World, Volume 1. Baltimore: The Johns Hopkins University Press.
- Wilson, D., D. Reeder. 2005. Mammal Species of the World. Baltimore: The Johns Hopkins University Press. Accessed November 16, 2007 at http://nmnhgoph.si.edu/msw/.