Evolution of Island Mammals: Adaptation and Extinction of Placental Mammals ... - Alexandra van der Geer, George Lyras, John de Vos, Michael Dermitzakis - Google Books

https://books.google.de/books?id=JmSsNuwMAxgC

Evolution on islands differs in a number of important ways from evolution on mainland areas.  Over millions of years of isolation, exceptional and sometimes bizarre mammals evolved on islands, such as pig-sized elephants and hippos, giant rats and…