What Behaviors Distinguish Old World Monkeys From New World Monkeys?

What Behaviors Distinguish Old World Monkeys From New World Monkeys? New World monkeys have broad noses with a wide septum separating outwardly directed nostrils, whereas Old World monkeys have narrow noses with a thin septum and downward-facing nostrils, as do apes and humans. What are the distinguishing characteristics of New World monkeys? The scientific name