ANIMALS - Reconstructing the New World monkey family tree

When monkeys landed in South America 37 or more million years ago, the long-isolated continent already teemed with a menagerie of 30-foot snakes, giant armadillos and strange, hoofed mammals. Over time, the monkeys forged their own niches across the New World, evolved new forms and spread as far north as the Caribbean and as far south as Patagonia ...

http://phys.org/news/2014-01-reconstructing-world-monkey-family-tree.h