Ceboidea

(New World monkeys), a group of higher primates. In most species the nasal septum is broad, and the nostrils are far apart and face outward. The body length ranges from 13 cm (Goeldi’s marmoset) to 75 cm (howler monkey), and the tail is from 19 cm (Goeldi’s marmoset) to 90 cm (coaita). The tail in some species is prehensile. There are no cheek pouches or ischial callosities. The hair is dense and of varying color. There are 32 (marmosets) or 36 (cebids) teeth. Ceboidea include one super-family that unites two families: Callithricidae and Cebidae. The monkeys are distributed in Central and South America. They are arboreal, diurnal (except Aotus), herd animals. Some live in small family groups.