Nature & Environment
Studying mammals: The social climbers
...World monkeys are catarrhines and New World monkeys are platyrrhines [p. 264]. In fact, apes and humans share many traits with Old World monkeys, so they too belong to the catarrhrines, whereas the New World monkeys are sufficiently distinct to be contained within a grouping of their own. DA also mentions other anatomical differences between catarrhines and platyrrhines,...