Under undisturbed conditions Old World monkey infants are weaned by their mothers at the age of about one year (Hall & DeVore, 1965; Southwick, Beg, & Siddiqi, 1965; Poirier, 1970; Roonwal & Mohnot, ...

This makes tree life a good fit. If you are looking at a monkey and are not sure what kind it is look at their noses. Old World monkeys have downward-facing nostrils (like humans) whereas New ...

Specifically, they found that the earliest New World monkey fossils were much older than ... For example, during the Miocene the ancestors of Old World monkeys and apes experienced both radiations ...