Phylogeography is a growth area of evolutionary biology. John Avise coined the term ‘phylogeography’ in 1987 and has been the prime mover in promoting the successful development of the field ever since. It is therefore to be welcomed that he has written this book which reviews the history of phylogeography, the fundamental principles of the field, and the current and future value of phylogeography within biogeography and evolutionary biology… I was very impressed by the manner in which Avise communicates the fundamentals of phylogeographic theory. He introduces much of this theory early on but elegantly extends concepts as necessary later in the book. He is exceptionally clear in discussing coalescence, lineage sorting, gene trees, species trees, differing consequences of nuclear vs. mitochondrial markers, etc.… A very good book… It deserves considerable success.