Because of the important developments that occurred after the mainland Pangea split up evolution on every continent occur in different ways. The difference is most striking in the group of animals and it is portrayed through the growth species. Once in the New World and Old World developed independently from a common ancestor, but far apart, they are identical in appearance but different in composition, anatomy inside. Apes evolved from monkeys ancient world and not found in Central and South America but the howler monkey species such as monkeys (Howler monkey) have evolved around the same area. Madagaca separated from Africa before monkeys and apes evolved, there should still keep the first phase of primate evolution as a species of Lemurs. Despite favorable conditions, but the rain forest Australia and New Guinea no humanoid monkeys and monkeys that only Marsupials like living on the tree kangaroo. Although highly evolved, Marsupials has dropped, even from the first stage in the evolution of mammals. We just live in the northern continents Gondvana (later became Australia, Africa, South America and Antarctica). Because animals evolved slower calving in the northern part of Pangea it has been unable to appear in Gondvana.
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