1. Primates of the infraorder Platyrrhini, characterized by flat noses with nostrils facing sideways; includes monkeys native to Central and South America.
Usage: plural form; scientific/zoological term; also called New World monkeys

Examples

• Platyrrhines are distinguished from Old World monkeys by their broad nasal septum and sideways-facing nostrils.
• The howler monkey is one of the largest platyrrhines found in the rainforests of South America.
• Unlike catarrhines, platyrrhines typically have a prehensile tail that aids in climbing.
• Scientists study platyrrhines to understand primate evolution and behavior in tropical ecosystems.
• Capuchins and spider monkeys are well-known examples of platyrrhines.
• The diversity of platyrrhines reflects millions of years of adaptation to New World environments.