"I was keenly anticipating this book, for I have the highest opinion of the work of both Cameron and Groves. I was not disappointed, for it is a thoroughly researched and entertaining book....Its strength lies in the wonderful clarity in which the principles of phylogenetic analysis are laid out and then applied rigorously to the hominid fossil record. Although many will disagree with the conclusions, they will be able to do so more readily because the analyses are so clearly set out, both the characters used and the methods." --Peter Andrews, Natural History Museum, London, England“This is a detailed treatment which is sure to stimulate consideable debate and argument. --David Pilbeam, Peabody Museum, Harvard University"Although fairly academic in approach, this is still a very readable and well-illustrated overview." --Douglas Palmer, NEW SCIENTIST