Superfamily Platyrrhini refers to a diverse group of New World monkeys that inhabit the tropical rainforests of Central and South America. There are many synonyms for this group, which includes the families of primates such as Callitrichidae, Cebidae, and Aotidae. Other common synonyms include the neotropical monkeys, flat-nosed monkeys, and the platyrrhine monkeys. These primates are distinct from their Old World counterparts due to their broad, flat noses and the lack of a nasal septum. This superfamily includes over 150 primate species, each with unique adaptations for their ecological niche. Some of the most recognizable members include marmosets, tamarins, and howler monkeys.