When Pangea broke apart about 200 MYA, groups of the same species became separated by oceans and were unable to mate, which led to them evolving into different species. This process is called:

Evolution.

Explanation:

Evolution led to the same species evolving into different type of species. Evolution is the change occurs in the characteristics of a species over several generations through natural selection process. This change occur according to the adaptation of the organisms to the surrounding environment. The organisms having characteristics that helps in the survival of that organism in that specific environment.